Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb8a022d0956de09…

MALICIOUS

PDF

246.3 KB Created: 2022-01-28 05:13:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-09
MD5: 83de633dc909b7f648e8a178a4616901 SHA-1: e5c369e2bb31cd5c02492517f141987d229c9da3 SHA-256: cb8a022d0956de095e264664ba355c50cee04a84566b2493a284983318ac353c
191 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7024

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://cafij.co.za/XSRYdR1H?utm_term=how+to+factory+reset+android+zte+tracfone PDF link annotation
    • http://www.fred-robin.com/ckfinder/userfiles/files/wozixumibunovo.pdfIn PDF document text
    • https://hkbca.org/UploadFiles/file/20211019182148189.pdfIn PDF document text
    • https://bandloc.sbchecks.com/FCKeditor/file/fomijemegomotukurutajex.pdfIn PDF document text
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16164327439d2a---petorowujanegu.pdfIn PDF document text
    • http://bekescsaba.varosom.hu/userfiles/files/44707121683.pdfIn PDF document text
    • https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/161cff9efa037c---4496787964.pdfIn PDF document text
    • http://malerbetrieb-malanders.de/Webseite/pics/fotos/1/file/26232948645.pdfIn PDF document text
    • http://ppfi-online.com/userfiles/file/vagebovetikim.pdfIn PDF document text
    • http://octapus.vn/images/uploads/files/mulevanelajumafowozutoba.pdfIn PDF document text
    • http://nabisori.com/userfiles/file/99739451501.pdfIn PDF document text
    • http://ncfc.com.tr/ckfinder/userfiles/files/jewokiwo.pdfIn PDF document text
    • https://ssatripoli.org/userfiles/file/jukabewitisefabagugo.pdfIn PDF document text
    • http://umpn.pnl.ac.id/asset/kcfinder/upload/files/96030962113.pdfIn PDF document text
    • http://omnoiptv.com/outscapes/admin/ckeditor/uploads/ck/files/90202184418.pdfIn PDF document text
    • http://topoint.net/userfiles/fckFile/20211018041850.pdfIn PDF document text
    • http://podhoru.cz/userfiles/file/fedokafakasarajezeged.pdfIn PDF document text
    • http://splogservice.ru/content/file/97368980113.pdfIn PDF document text
    • https://ehbo-oostkapelle.nl/userfiles/file/72253180506.pdfIn PDF document text
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/161a6b3b484ad6---fawojodi.pdfIn PDF document text
    • https://uppersanduskyrotary.com/cms/files/File/5706124254.pdfIn PDF document text
    • http://111-orte.com/testarea/cwsCMSlight/media/files/velefanaporopazofezo.pdfIn PDF document text
    • https://gatia.kone-equicentrum.cz/userfiles/files/82404981772.pdfIn PDF document text
    • https://libertyrealestate.in/ckfinder/userfiles/files/vevokefaf.pdfIn PDF document text
    • http://vwtint.com/userData/board/file/6002655113.pdfIn PDF document text
    • http://aucontecnologia.com/userfiles/files/22471847558.pdfIn PDF document text
    • http://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/1616b307657c54---37613532879.pdfIn PDF document text
    • https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/161a83e6e83beb---39371379137.pdfIn PDF document text
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/16179f6d891bc8---68720924768.pdfIn PDF document text
    • http://www.onlinenieuwsbriefversturen.nl/gebruikers/afbeeldingen/kigijovat.pdfIn PDF document text
    • http://super-rc.co.jp/admin/kcfinder/upload/files/malukuralewevopexa.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 (stream_007_off0003a3ff.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (stream_007_off0003a3ff.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off0003a3ff.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3A3FF 21360 bytes
SHA-256: cf602d8eec15a3b569b25100444a80563af483a52a9e24d6289c0d3bb03b8ebf
font_00_sfnt_off00034518.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34518 18116 bytes
SHA-256: 5891ab1214e54b3323ff3039849c1970ecd0ec2c4bae946a4080e9460c7af843
font_01_sfnt_off000374ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x374AC 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off00038b50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38B50 10672 bytes
SHA-256: 256426662311ac20c2e432825e6aeda147ac36eb26506fa7b91ddfec2a358b58