Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f3a0a8d99e29458…

MALICIOUS

PDF

281.8 KB Created: 2022-03-07 07:16:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-03
MD5: d5db2ae66f0cecf7bd281003a4365111 SHA-1: a0e95255d837c7b2429e4f0d2d836961c941ba84 SHA-256: 5f3a0a8d99e29458e50bd6a6f299b0396a80e1a64dae8f5dc092813b73a75ded
191 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5129

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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 http://vibrator4you.cz/UserFiles/File/74351523093.pdf In PDF document text
    • http://cautrucpalang.vn/webroot/img/files/kepafidegavijoxufuvaxikus.pdfIn PDF document text
    • https://alcc.c-zentrix.com/ALCC/mail_attachments/multitenant-ws-01/1/1646612121.pdfIn PDF document text
    • http://grupomagister.com.br/kcfinder/upload/files/52601382803.pdfIn PDF document text
    • http://k-yoga.org/file_upload/spaw_upload/file/20220303100431.pdfIn PDF document text
    • http://hotelhillwaypark.com/app/webroot/js/kcfinder/upload/files/luweduk.pdfIn PDF document text
    • https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/036f959a16c2e3e645c1affcdfe7dd6c/sirumud.pdfIn PDF document text
    • http://bearings-home.com/userfiles/file/sasokugawitimikupuludutol.pdfIn PDF document text
    • http://asupuro.com/user_data/image/file/vodix.pdfIn PDF document text
    • http://fskyok.com/uploadfile/files/74586944670.pdfIn PDF document text
    • http://www.velkoobchod-man.eu/ckfinder/userfiles/files/wawafi.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/16212bb8d68eca---bivowikitujuvunuxanujeti.pdfIn PDF document text
    • https://eguiders.com/uploads/93929183723.pdfIn PDF document text
    • http://mrspk.com/ckfinder/userfiles/files/10537011146.pdfIn PDF document text
    • https://seltec.io/images/uploads/files/51414712544.pdfIn PDF document text
    • http://gioithieu.btccorp.vn/uploads/files/rukifi.pdfIn PDF document text
    • http://aeusjtu.pretty-match.com/upload/files/toditaga.pdfIn PDF document text
    • http://ieeepes-thailand.org/app/webroot/files/files/63239438736.pdfIn PDF document text
    • https://greenlakepaint.com/ckfinder/userfiles/files/91205563431.pdfIn PDF document text
    • http://christ-china.com/filespath/files/20220224150539.pdfIn PDF document text
    • http://ucinnovation.ru/admin/ckfinder/userfiles/files/87761529853.pdfIn PDF document text
    • http://atya.eu/files/file/tubalavom.pdfIn PDF document text
    • https://teraimpex.ro/up-images/file/tagegusulozunajevap.pdfIn PDF document text
    • http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/1620dcb71c49e5---57195589444.pdfIn PDF document text
    • http://cadex-forensique.ch/app/webroot/kcfinder/upload/files/zafami.pdfIn PDF document text
    • http://www.ximangsongthao.com.vn/app/webroot/uploads/files/vudid.pdfIn PDF document text
    • http://dorapeyzaj.com/userfiles/file/bogabonajojiji.pdfIn PDF document text
    • https://ljlconst.com/admin/images/file/6738205986.pdfIn PDF document text
    • https://fjhi.org/userfiles/file/lofizowabe.pdfIn PDF document text
    • http://www.verneteco.com/ckfinder/userfiles/files/gefiziledajawe.pdfIn PDF document text
    • https://insetclean.com.br/kcfinder/upload/files/xezalat.pdfIn PDF document text
    • https://sunuf.co.za/XSRYdR1H?utm_term=ecommerce+android+app+template+freePDF link annotation
    • http://mrcubezpieczenia.pl/app/webroot/media/files/45470738221.pdfIn PDF document text
    • http://super-rc.co.jp/admin/kcfinder/upload/files/58352397873.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_off0003e114.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0003e114.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003e114.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3E114 18604 bytes
SHA-256: 6d8f356d43e8c01817b06591a45991c5023352aa4e65d1cdc96d651f68efa32e
font_01_sfnt_off00041211.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x41211 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off00042931.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42931 10596 bytes
SHA-256: e56e3ba29ff4eea64477d362e81f7be7e928b4a04369745b676eeec5068b2948
font_03_sfnt_off00044144.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44144 16336 bytes
SHA-256: adf38969d40f501586e0caf93d33991e243baeeecfe575c4831cdbf64b7044fa