Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b880239bcf08daf…

MALICIOUS

PDF

58.6 KB Created: 2021-01-06 08:03:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 7e475c02cc604ad0b93a53e01f587e42 SHA-1: 5cb976e1d8fdba19a34412471c161678312e8900 SHA-256: 5b880239bcf08dafde92b57355adca03b5ea931370bf5796d9545aa4fb33ffca
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 file contains a large number of external links, identified as a link farm. The ClamAV detection and ML classifier indicate malicious intent, specifically phishing or trojan activity. The embedded URLs suggest the document is designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7109

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://traffine.ru/aws?utm_term=pages+cookbook+template+free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408481/normal_5f945057f191f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480383/normal_5fb2abd9a45c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503390/normal_5fad14c66fd0b.pdfIn PDF document text
    • https://cdn.sqhk.co/zewuxumaro/Fdjc0GE/nedumumu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459477/normal_5fa245319272e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371495/normal_5f90621e55f71.pdfIn PDF document text
    • https://cdn.sqhk.co/figakeves/PUyijj0/zombie_diary_2_hack_apk_free_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368955/normal_5fca5c4b899e6.pdfIn PDF document text
    • https://paxubemimowam.weebly.com/uploads/1/3/0/7/130739876/7826413.pdfIn PDF document text
    • https://cdn.sqhk.co/tororukiwuri/ihcKajg/11_stone_12._25_pounds_in_kg.pdfIn PDF document text
    • https://bemebedutor.weebly.com/uploads/1/3/4/6/134624352/ba1720.pdfIn PDF document text
    • https://neburaguvud.weebly.com/uploads/1/3/4/4/134477844/1b401f5bd46c362.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366398/normal_5fdb1a78653bc.pdfIn PDF document text
    • https://ditiwudo.weebly.com/uploads/1/3/1/4/131452947/5123063.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409420/normal_5fe07c5c6313c.pdfIn PDF document text
    • https://gewaxuselez.weebly.com/uploads/1/3/4/2/134265722/4969968.pdfIn PDF document text

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