Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc7a2ff882a3df96…

MALICIOUS

PDF

66.5 KB Created: 2021-07-13 17:06:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 3f5555de47c651a23feb7c319bd9bf2a SHA-1: 8114fc59c4ae39624de40d5f66de155e5a286ca9 SHA-256: cc7a2ff882a3df960c604b241b8b29b54785f7c0a0243c8df2de578bc9f1063d
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links, many pointing to potentially compromised WordPress sites and other domains, suggesting a link farm for SEO manipulation or to distribute further malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted, and the document body was unreadable, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6756

Heuristics 4

  • 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 http://newcastlehigh1967-50threunion.com/clients/43248/File/95997754745.pdf In PDF document text
    • https://genegurumiraclehealer.com/userfiles/file/11215950638.pdfIn PDF document text
    • http://qiangka.com/ckfinder/userfiles/files/43692062188.pdfIn PDF document text
    • https://lukili.ch/UserFiles/files/kamiwekufowupapanadajowe.pdfIn PDF document text
    • https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/uc11mmvhu3ajk8e34r3sfgm6ue/50217502362.pdfIn PDF document text
    • http://www.ambredore.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079e16c1fb1f---fozemumobekudaz.pdfIn PDF document text
    • http://warraichmeats.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080a2fc7eb9b---roduxutepawezazas.pdfIn PDF document text
    • http://for284.org/clients/7/74/7452b259410349f427184d5eaa48bde7/File/14392271139.pdfIn PDF document text
    • http://beiwendq.com//data/attachment/file/zajogalonikiloreremura.pdfIn PDF document text
    • http://alfonsoguiggiarchitetto.it/userfiles/files/39085637762.pdfIn PDF document text
    • https://dedywiredja.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c93097f04b1---mabobufovi.pdfIn PDF document text
    • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160aba56747e66---41511670742.pdfIn PDF document text
    • http://ctyrkolky-gamax.cz/data/dokumenty/28019784267.pdfIn PDF document text
    • https://www.auditek.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608fa35717a9e---44643779122.pdfIn PDF document text
    • http://nnk.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160dbc81c4fab0---fuzawazirivajomatixore.pdfIn PDF document text
    • https://ev-owners.jp/userfiles//files/napuras.pdfIn PDF document text
    • https://alternativecarrepair.com/userfiles/file/21090602239.pdfIn PDF document text
    • https://suemsas.com/wp-content/plugins/super-forms/uploads/php/files/3555tk60vh6khe670n0djdjmo3/vukugatuselovan.pdfIn PDF document text
    • https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075d3e5a1c9d---kosafepomenoli.pdfIn PDF document text
    • http://cartonwrappingmachine.com/userfiles/file/45931656318.pdfIn PDF document text
    • http://magendans.com/imagefiles/file/sofijepowajivogemeven.pdfIn PDF document text
    • https://edukiya.com/wp-content/plugins/super-forms/uploads/php/files/edc8d924c61eced0c5cb669216a99bb9/wobarajunomavemerexenel.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=minecraft+how+to+use+name+tagPDF link annotation

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