Malicious PDF — malware analysis report

Static analysis result for SHA-256 76a4225f6bc28507…

MALICIOUS

PDF

109.1 KB Created: 2021-03-26 07:43:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0bce6bfe1e5bb11c30c70ff1b50baa8e SHA-1: eaae286e1969aea2b563d80951b9605a46c0ead4 SHA-256: 76a4225f6bc2850736f7e8356a36ca05a86bdc5452eb1e383072d2cc3d637eb4
182 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with several pointing to known malicious redirector infrastructure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were extracted, the PDF structure itself facilitates the redirection to malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9456

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/award?keyword=business+correspondence+in+english+pdf
    • https://siximegam.weebly.com/uploads/1/3/1/4/131453251/xuvexulimanozibuv.pdf
    • http://goxivomibivufuv.mywebcommunity.org/bepopizikodokisazilili.pdf
    • http://the-glow.ru/everstart_750_amp_jump_starter_manualyav2k.pdf
    • http://torchland.xyz/2017_vw_tiguan_maintenance_schedule_uk2hdj2.pdf
    • https://xanodupujariris.weebly.com/uploads/1/3/0/9/130969381/e315fe2f78.pdf
    • https://cdn.sqhk.co/vakusukereju/ibhjihj/service_company_income_statement_expenses.pdf
    • https://rofewure.weebly.com/uploads/1/3/3/9/133999154/divimozokaraf.pdf
    • https://bupedokan.weebly.com/uploads/1/3/1/6/131607930/1350813.pdf
    • https://cdn.sqhk.co/tebefaravuz/wcChagg/69093737622.pdf
    • https://cdn-cms.f-static.net/uploads/4405179/normal_603ac705e5b4f.pdf
    • http://wide-do.top/canon_rebel_xt_review3fv58.pdf
    • https://cdn-cms.f-static.net/uploads/4490725/normal_601c90832565a.pdf
    • https://static.s123-cdn-static.com/uploads/4370987/normal_5fe1607a1c081.pdf
    • https://cdn-cms.f-static.net/uploads/4403820/normal_6023b955adca8.pdf
    • http://medway24.com/falutowafebatiduxujub0h2zc.pdf
    • http://woranuganavot.myartsonline.com/china_s_1979_war_with_vietnam_a_reassessment.pdf

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