Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8e0a4b30d97c800…

MALICIOUS

PDF

67.6 KB Created: 2021-03-21 22:04:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 137d3059f7f0faa0e5993c219a0f2337 SHA-1: 50e77853fb82e70371b72063de53bc224eb0dd92 SHA-256: d8e0a4b30d97c800e50aecaf9ee2f6d75cf46160926fd381d4d381b23596dd13
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs, with a primary URL pointing to a domain associated with malware distribution. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a link farm on disposable hosting, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection further support the malicious nature of the file, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5221

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://xezojetit.ru/aws?utm_term=symbol+ls2208+windows+10+driver
    • http://it50off.pro/dumovufesojaxakozitepzrjnz.pdf
    • http://dorightpress.com/gefozidikudow2zoto.pdf
    • https://cdn-cms.f-static.net/uploads/4371787/normal_602f5d586e517.pdf
    • https://cdn-cms.f-static.net/uploads/4408862/normal_602a88dabb83e.pdf
    • https://pijafajabivigin.weebly.com/uploads/1/3/4/6/134635516/bc8b4d7d362fd85.pdf
    • https://cdn-cms.f-static.net/uploads/4426071/normal_6031af6a91468.pdf
    • http://pollsexpert.com/tagulevibowakkywl.pdf
    • http://xufuxenu.mypressonline.com/lomonajasesafujiter.pdf
    • https://goxatuzibifonev.weebly.com/uploads/1/3/0/7/130739188/mijazifozokabewar.pdf
    • https://jiwuzutobaduf.weebly.com/uploads/1/3/4/8/134889186/7718373.pdf
    • http://it50disconto.pro/nabiliretisor21.pdf
    • https://cdn-cms.f-static.net/uploads/4492901/normal_601a0fd5cebe2.pdf
    • https://cdn-cms.f-static.net/uploads/4476152/normal_600bba54be5cb.pdf
    • https://mepodatadun.weebly.com/uploads/1/3/1/4/131452799/829ac11cde7574.pdf
    • http://tiwosutodegadax.onlinewebshop.net/diagnostico_de_anemia_perniciosa.pdf
    • http://lezebotetojezaz.epizy.com/cessna_caravan_operating_costs.pdf
    • http://teguwawax.rf.gd/nuvasakirut.pdf
    • https://s3.amazonaws.com/falevi/siwipejefidabepugef.pdf
    • https://s3.amazonaws.com/bejokazemur/75350646345.pdf
    • https://s3.amazonaws.com/ragejufa/67937253225.pdf
    • https://s3.amazonaws.com/poguvelefa/ziratemedaki.pdf
    • http://sobojagi.epizy.com/vermont_castings_intrepid_1.pdf
    • http://rufedum.rf.gd/baby_girl_names_that_start_with_a_t.pdf
    • https://s3.amazonaws.com/pazatuv/arcgis_pro_update_failed_server_error.pdf

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