Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c681b3c1bc3b672…

MALICIOUS

PDF

42.1 KB Created: 2021-03-18 04:06:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8b11c845868e1564ef8dd3fb23763b4a SHA-1: 399ebfd9e25908c5be1cd31a911ff1e07c2c3cf7 SHA-256: 8c681b3c1bc3b672f66c635b9b1b41c0ab63b9e2c91575cc044d4d33f8f1319a
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7862

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://midufefew.ru/award?keyword=livro+o+biocentrismo+pdf PDF link annotation
    • http://christinaanddavid2019.com/gupovogimiduxikevwh3oh.pdfIn PDF document text
    • http://pexulisinipev.sportsontheweb.net/88027473206.pdfIn PDF document text
    • http://gekodejevotug.medianewsonline.com/porter_cable_air_compressor_c2002_drain_valve.pdfIn PDF document text
    • http://rodina38.ru/gdt_11_manualwjewp.pdfIn PDF document text
    • http://livethailand.fun/estudios_de_casosoerky.pdfIn PDF document text
    • http://pedalini.club/669716699251uixk.pdfIn PDF document text
    • https://vufegolafo.weebly.com/uploads/1/3/0/9/130969987/rozuwiw.pdfIn PDF document text
    • https://lirupije.weebly.com/uploads/1/3/1/6/131606624/wiwobimidom.pdfIn PDF document text
    • http://nazhivy.net/tascam_414_mkii_review0jtmr.pdfIn PDF document text
    • https://mosovokiz.weebly.com/uploads/1/3/4/3/134333023/wapetubaseko-xuvezozoz-kufepovidagi-tijurudasobanip.pdfIn PDF document text
    • http://kofodotig.sportsontheweb.net/80817741627.pdfIn PDF document text
    • http://vopugixeroramox.medianewsonline.com/schaums_outline_tensor_analysis.pdfIn PDF document text
    • http://medgaj.com/why_did_the_north_supported_high_tariffs1wlr6.pdfIn PDF document text
    • http://copyrightshelpcenter.com/penexopegatuqfco5.pdfIn PDF document text
    • https://wazalopa.weebly.com/uploads/1/3/0/8/130814586/1022905.pdfIn PDF document text
    • http://kamini33.ru/32822015077nf7b8.pdfIn PDF document text
    • http://lnstagramcentre.net/gafedexj6t.pdfIn PDF document text
    • http://mx50off.pro/wuvepamisuzovae70v.pdfIn PDF document text
    • http://gakamaxoluzes.atwebpages.com/ice_breakers_duo_mints_strawberry.pdfIn PDF document text
    • http://wififeju.atwebpages.com/valumixozenajidedolo.pdfIn PDF document text
    • http://naxesabefadufu.atwebpages.com/biradudomebulilerovuzo.pdfIn PDF document text
    • http://jalijoruki.atwebpages.com/66149473025.pdfIn PDF document text

Related samples 8

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