Malicious PDF — malware analysis report

Static analysis result for SHA-256 c042a2db909a4683…

MALICIOUS

PDF

357.6 KB Created: 2022-02-21 21:34:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-16
MD5: f2b6f60303e75d36339b227e5be26815 SHA-1: 3fea986dbf744643d0feabb8cb901fbfc4b3b5ea SHA-256: c042a2db909a4683e354ea1325047ed6ef18fbb86c8229eab2dc7aa62d1511bb
331 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5293

Heuristics 10

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Viral-video clickbait PDF links to suspicious host critical SE_VIRAL_VIDEO_CLICKBAIT_LINK
    Document uses viral/leaked-video lure text and links to a suspicious disposable-looking web host. This is a clickbait/traffic-scam carrier shape rather than a benign PDF link.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • PDF advertises pirated movie streaming/download medium PDF_PIRACY_STREAMING_LURE
    PDF rendered text advertises free full-movie streaming or download using piracy-brand names or a 'full movie + download/free/watch' intent phrase — recovered after folding the styled Unicode confusables the campaign uses to hide those keywords from plain-text detection. These are disposable SEO-spam carriers that route users to malvertising, fake-player, and scam pages; the PDF itself is inert.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://cafij.co.za/XSRYdR1H?utm_term=animator%27+s+survival+kit+expanded+edition+pdf PDF link annotation
    • http://thuocnam.xyz/images/files/lutexuz.pdfIn PDF document text
    • http://rjbmachinery.com/d/files/92106909399.pdfIn PDF document text
    • http://jd6618.com/jd6618/file/2021-10/file/LwpCms2021_10_13_20_46_18_6016.pdfIn PDF document text
    • http://mezon.jp/userfiles/file/nodewo.pdfIn PDF document text
    • http://littlepearlbooks.in/data/eimages/file/zesarifo.pdfIn PDF document text
    • https://psicologopsicoterapeutaemdrtorino.it/uploads/file/97729800047.pdfIn PDF document text
    • https://almuhja.com/ckfinder/userfiles/files/52417738913.pdfIn PDF document text
    • https://wyslijpaczki.pl/app/webroot/files/userfiles/file/gobasasato.pdfIn PDF document text
    • http://neodentpetrosino.it/userfiles/files/lotavazaposapujo.pdfIn PDF document text
    • https://foursservices.com/nbloom/fckuploads/file/vidudiwadukutovebevoxalag.pdfIn PDF document text
    • http://mebelhotel.ru/images/news/file/zujaxusuva.pdfIn PDF document text
    • http://www.akutrans.com/wp-content/plugins/formcraft/file-upload/server/content/files/160faf9071e0d3---29129363189.pdfIn PDF document text
    • http://lnv-cnc.gr/userfiles/file/jepodam.pdfIn PDF document text
    • http://wieswioska.pl/userfiles/file/37230196987.pdfIn PDF document text
    • https://bangkokmagnetwire.com/ecodev_test/image_system/files/wupofuwonakigata.pdfIn PDF document text
    • https://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/16186fb52a3257---59442755612.pdfIn PDF document text
    • http://immat.org.tr/kcfinder/upload/files/lekaxalabeg.pdfIn PDF document text
    • http://studiotecnicolari.it/userfiles/files/besasumopotasezelamu.pdfIn PDF document text
    • http://vdadanang.vn/app/webroot/assets/files/ropuk.pdfIn PDF document text
    • https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e4a2e882b68---wagakinatekumolu.pdfIn PDF document text
    • http://uijaebooks.com/uploadfile/board_data/202201/file/1642770304.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/161ec85b7d931e---42794734252.pdfIn PDF document text
    • http://speed-r.com/js/upload/files/veretavifozegadomamesew.pdfIn PDF document text
    • https://riolisboa.com/images/ul_files/file/urxaLWsdoPDn.pdfIn PDF document text
    • http://akiyastyle.com/app/webroot/js/ckfinder/userfiles/files/wuxixoterar.pdfIn PDF document text
    • http://srcchaika.ru/files/uploads/files/dosivopumixazezakonisob.pdfIn PDF document text
    • http://meteoratourismactivities.com/files/files/sekatigoviso.pdfIn PDF document text
    • http://siltherm.com/ckfinder/userfiles/files/lojed.pdfIn PDF document text
    • https://billionbosses.com/ckfinder/userfiles/files/29102025883.pdfIn PDF document text
    • http://envisystem.com/upload/userfile/files/wutalovez.pdfIn PDF document text
    • http://mwflower.com/upimagesfile///17105702613.pdfIn PDF document text
    • http://hvnepal.com/assets/kcfinder/upload/files/86868879066.pdfIn PDF document text
    • https://hmanagement.net/userfiles/file/87257982996.pdfIn PDF document text
    • http://khiensa.com/UserFiles/File/ribivexibebakevusoxapan.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161bfec21dfa03---55743515728.pdfIn PDF document text
    • http://haliburtonhighlandsheritage.ca/userfiles/file/39102304397.pdfIn PDF document text
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/16213b49d0cf06---6289544417.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off000505a0.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000505a0.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000505a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x505A0 16336 bytes
SHA-256: adf38969d40f501586e0caf93d33991e243baeeecfe575c4831cdbf64b7044fa
font_01_sfnt_off00051ba3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51BA3 11032 bytes
SHA-256: 9783789db88f4844af15e134463fd5310161436f78a575fba2e6213a480ff019
font_02_sfnt_off00053565.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53565 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_03_sfnt_off00054c82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54C82 21688 bytes
SHA-256: 1720323e5bb324499ebac518684243a6ec2417c1e040dc13111572dc16840460