Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ea2fc3465d3a7c3…

MALICIOUS

PDF

62.0 KB Created: 2021-05-09 17:29:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 689a90cb213d2d023baf7c4f7f4b66de SHA-1: 46632539c00204774c68ae5575bd2b0dc1695867 SHA-256: 2ea2fc3465d3a7c3b5ce462828a35e375055082f9300627937f8ea9b4fd9f334
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous links to external websites, many of which are hosted on compromised WordPress installations. The document body, though heavily obfuscated, suggests a lure related to product listings ('Oreiller memoire de forme'). The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics indicates a pattern of using link farms on disposable or compromised hosting for malicious purposes. The ClamAV detection as Pdf.Phishing.Trojan further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8151

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://krisoc.ru/uplcv?utm_term=oreiller+memoire+de+forme PDF link annotation
    • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609031530c96c---42360341882.pdfIn PDF document text
    • http://turagent007.ru/userfiles/file/64954887806.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/0m4g91epkrco7hvq3q7tme2mkm/64994300940.pdfIn PDF document text
    • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608548e59c983---dodobu.pdfIn PDF document text
    • https://www.kalirich.com/wp-content/plugins/super-forms/uploads/php/files/46b66fnv4itft30v88svt90mn1/mukevoxivibetuwijotumotej.pdfIn PDF document text
    • https://www.helpfulhunks.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607fe921a6cc8---tosare.pdfIn PDF document text
    • https://www.abaco-engineering.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607756ff3152e---96794806512.pdfIn PDF document text
    • https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb407da947---xetevulotupasejemejawobux.pdfIn PDF document text
    • http://xn--clinicaquirogavilario-vbc.com/wp-content/plugins/super-forms/uploads/php/files/afa4h922bdfduo97e67sfm43s2/5592774000.pdfIn PDF document text
    • http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/1606c82f5a759a---gekegexusuvajuw.pdfIn PDF document text
    • https://www.qbuildsoftware.com/wp-content/plugins/super-forms/uploads/php/files/a41bc73415b87a14813703e4b7abb5d7/wogujaxokedebugosujemowif.pdfIn PDF document text
    • https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/4a3551cb472a6073f34b97d77041f4a6/bukafuwo.pdfIn PDF document text
    • http://beiks.info/public/file/babomufuvupirus.pdfIn PDF document text
    • https://growmytruck.com/wp-content/plugins/super-forms/uploads/php/files/72b5cd84dc3ad0e56aef9dddde3c5453/borumixazegevosunedi.pdfIn PDF document text
    • http://amandamaitland.com/images/file/duxunesi.pdfIn PDF document text
    • https://kvgrup.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/16092b34366838---39969669145.pdfIn PDF document text
    • https://unosms.us/userfiles/file/fenosegexalagenaziporix.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dee9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEE9 4692 bytes
SHA-256: a71264a209f0ef7c7662519fef780c22988d0dec79101afc2cc7596aa1972678

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