Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2bf98670d2725d3…

MALICIOUS

PDF

48.7 KB Created: 2021-06-06 05:40:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 696de6237af1ee9a41963072868aadaf SHA-1: 0a5caaf8f6041b7eca27a441feacc62e66588ea7 SHA-256: e2bf98670d2725d36ae11f6de9c09f8e1ed23b52899fcbb0e14dd6e7d75e659a
184 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.8020

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://pistant.ru/pbw?utm_term=convert+pdf+to+autocad+linework PDF link annotation
    • https://ropujumidud.weebly.com/uploads/1/3/1/4/131406541/685616.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403937/normal_6062fe2e90bea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389361/normal_6056cfd57223f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384160/normal_606e56c8d5ff3.pdfIn PDF document text
    • https://dajikapepexav.weebly.com/uploads/1/3/4/5/134597014/jifipibikit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479237/normal_5fd127fb466ee.pdfIn PDF document text
    • https://fugesozuxi.weebly.com/uploads/1/3/0/7/130739141/432058.pdfIn PDF document text
    • https://puwulafu.weebly.com/uploads/1/3/5/3/135329465/c134eb8451d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407983/normal_600918ce1401d.pdfIn PDF document text
    • https://pepodefaposuv.weebly.com/uploads/1/3/5/9/135992330/vezoxafapikimef.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4379034/normal_60b0ae2e2d0c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408330/normal_5fe6c85b9dd38.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410433/normal_604071e8a8a20.pdfIn PDF document text
    • https://dopapixe.weebly.com/uploads/1/3/1/3/131383645/zinudefarorel.pdfIn PDF document text
    • https://rerararomimin.weebly.com/uploads/1/3/1/3/131383042/2961542.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4452381/normal_60b5dfbb8c73d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420468/normal_60537ea85afaf.pdfIn PDF document text
    • http://xuvabufoj.pbworks.com/w/file/fetch/144556464/how_do_i_reset_my_lenovo_tablet_to_factory_settings.pdfIn PDF document text
    • http://sagidetubi.pbworks.com/w/file/fetch/144624783/what_can_void_a_real_estate_contract.pdfIn PDF document text
    • http://subazim.pbworks.com/w/file/fetch/144554772/wufusobafaxipelo.pdfIn PDF document text
    • http://wepoline.pbworks.com/w/file/fetch/144450807/how_long_do_you_look_at_the_amsler_grid.pdfIn PDF document text
    • http://xojifot.pbworks.com/f/jufufobuduviluzemowuxid.pdfIn PDF document text

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