Malicious PDF — malware analysis report

Static analysis result for SHA-256 2618e14f1f6d3f23…

MALICIOUS

PDF

50.6 KB Created: 2020-11-23 03:45:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: b07e2866df8fca60c449a8f11791dfa8 SHA-1: 6d56612d6b41ba1b33776d9f43cc0043733804df SHA-256: 2618e14f1f6d3f2314f6b60414da26c530224d18762d0b4caf5f832f5657aede
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous external links, many of which are part of an SEO link farm designed to redirect users to malicious content. The primary redirector URL, 'https://trafftec.ru/aws?utm_term=chemistry+form+2+structure+and+bonding+pdf', is identified as a lure for free downloads, indicating a phishing attempt. ClamAV detection further confirms the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6878

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://trafftec.ru/aws?utm_term=chemistry+form+2+structure+and+bonding+pdf PDF link annotation
    • https://kebotufu.weebly.com/uploads/1/3/4/7/134735966/7d07ba.pdfIn PDF document text
    • https://pobikutilun.weebly.com/uploads/1/3/4/8/134871216/9216439.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387571/normal_5fa0a2868bdbe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445564/normal_5fb34b2849a29.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375086/normal_5f8985098fe84.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445737/normal_5f9dfdeb855a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502906/normal_5fad9f8567c15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370785/normal_5f8a83ac6dbda.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/zynga_poker_hacked.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffad8a31-d4b2-43c4-983a-01e18b1444ea/texatug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5fb70e2d-91eb-43b0-9f02-9063b5199644/xojidufovemobalolew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a304d5d-2d18-4c4f-ba5b-b706197940b9/acnl_eyes_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1608241-59cb-4f15-9766-2c8c4a7931d0/fazezobor.pdfIn PDF document text

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