Malicious PDF — malware analysis report

Static analysis result for SHA-256 26490751e8b45e6f…

MALICIOUS

PDF

84.6 KB Created: 2020-11-13 16:24:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0c170dae32aae7680df2988afbca8a79 SHA-1: 0219053b4ec24e3061eb0d88977b375a76c733be SHA-256: 26490751e8b45e6fb7ebc1da64f817a2f51230cc2b6da5c36b8e5fa17a8aa47a
212 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, identified as a link farm, with several pointing to known malicious redirectors. The ClamAV detection and ML classifier further support its malicious nature. The primary attack pattern involves luring users to external malicious sites, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9131

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.
  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://cctraff.ru/aws?utm_term=honeyguide+mantobeni+tented+camp
    • https://lunipudazu.weebly.com/uploads/1/3/4/4/134462877/73f92b0c30a82.pdf
    • https://buxijoxusezo.weebly.com/uploads/1/3/1/4/131483018/xidojewelop.pdf
    • https://jawowigo.weebly.com/uploads/1/3/0/7/130774982/zegomotagenig.pdf
    • https://zalawevovupat.weebly.com/uploads/1/3/0/9/130969727/5666024.pdf
    • https://cdn-cms.f-static.net/uploads/4480584/normal_5fa7351b45e9c.pdf
    • https://siwinapevaz.weebly.com/uploads/1/3/4/3/134338690/7494478.pdf
    • https://cdn-cms.f-static.net/uploads/4366015/normal_5f86fedf98283.pdf
    • https://s3.amazonaws.com/zubuwujoxom/37863887154.pdf
    • https://uploads.strikinglycdn.com/files/aece952a-d718-4ef7-986a-d59acbda61d0/bimomofetesovowojukin.pdf
    • https://uploads.strikinglycdn.com/files/e3c1d314-a957-4f77-95eb-84471aeb59d3/dasoju.pdf
    • https://uploads.strikinglycdn.com/files/e88b2c64-7578-4182-a889-58c1d2481d17/jewuzadezize.pdf
    • https://uploads.strikinglycdn.com/files/b19aac07-1bd7-4570-aba4-070e365e978a/ccie_wireless_book.pdf
    • https://s3.amazonaws.com/zuses/burore.pdf
    • https://uploads.strikinglycdn.com/files/aeab10e5-1654-42b5-ba6f-3f93136b178b/best_indian_cookbook_serious_eats.pdf
    • https://uploads.strikinglycdn.com/files/65db4f8e-98de-45e3-8bd2-79bc5a830144/47500204067.pdf
    • https://uploads.strikinglycdn.com/files/f5ca6baa-c5e4-4e8a-b70b-ea5e5c54c8ec/96771681879.pdf

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