Malicious PDF — malware analysis report

Static analysis result for SHA-256 06ccb44a78d283ce…

MALICIOUS

PDF

93.7 KB Created: 2021-09-13 02:56:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 627f655ebeb227d41febbbba15806d40 SHA-1: 3621659c69d608c4a749a43b2d7e02def80e46aa SHA-256: 06ccb44a78d283ce52cb1bf62b2d0adece185cc9b3aa4be40bc562977d06fa48
124 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, many of which point to disposable hosting and are structured as link farms, a common tactic for phishing or distributing further malware. The presence of 'utm_term' parameters in some URLs suggests tracking or redirection, further supporting a malicious campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7994

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://archism.ru/uplcv?utm_term=ittefaq+movie+torrent+download PDF link annotation
    • https://happycustomerservice.com/wp-content/plugins/super-forms/uploads/php/files/2f09a5122f6b7cca3c5a7a2529ed1b42/97928861338.pdfIn PDF document text
    • http://saint-party.com/media/file/puresalugipokon.pdfIn PDF document text
    • http://www.bsa.by/ckfinder/userfiles/files/fixekazojejisime.pdfIn PDF document text
    • http://huichem.com/ckfinder/userfiles/files/94634758748.pdfIn PDF document text
    • http://leylatoprak.com/userfiles/file/vijivenikanapedogob.pdfIn PDF document text
    • https://aluminiosarla.com/userfiles_arla/files/jimimixegopakazumax.pdfIn PDF document text
    • http://knipia.com/userfiles/file/janexewew.pdfIn PDF document text
    • http://cascad-trans.ru/files/94813661082.pdfIn PDF document text
    • http://tainghe.vn/userfiles/file/banozitabeluniwuvibuzade.pdfIn PDF document text
    • https://noithatkuongthinh.com/uploads/files/zerikejulesame.pdfIn PDF document text
    • http://patrick-jardinage.fr/ckfinder/userfiles/files/josesexakakolazuvegivo.pdfIn PDF document text
    • http://www.srijonihealinghome.com/fckimages/file/83625120268.pdfIn PDF document text
    • http://unixsensor.com/uploads/files/202109120731131887.pdfIn PDF document text
    • http://capitaldanceacademy.com/userfiles/files/83190166718.pdfIn PDF document text
    • http://reklamaopole.pl/userfiles/file/50388318262.pdfIn PDF document text
    • http://srsheicha.com/uploadfile/file/mafepaxitamofovovarojeb.pdfIn PDF document text
    • https://karlschool.org/uploads/files/202109062355521717.pdfIn PDF document text
    • http://studiotecnicodambra.eu/userfiles/files/60008922893.pdfIn PDF document text
    • http://manvilastrust-org.bvirani.com/ckfinder/userfiles/files/tevukedatufufadub.pdfIn PDF document text
    • http://cu-mbc.com/ckfinder/userfiles/files/12065891951.pdfIn PDF document text
    • https://ntc-container.com/upload/files/gesonib.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/bvmrg5u30h07kfv30ueddlm9q3/zewikomunupijirujuja.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000138a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138A3 23624 bytes
SHA-256: 11c4815b32c2b51edc75f60e7bf6d22dfc2e1d34ec4562fa80a275fd98ae43d5

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