PDF malware analysis — malicious · 881c5aadc24581cf

MALICIOUS

PDF

49.6 KB Created: 2021-01-12 13:30:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05

MD5: 9b3e2cac198e895bd4bee6ee2f9fbc06 SHA-1: 77ccb99016e69abc2aa5b338e8378f36aa965e3b SHA-256: 881c5aadc24581cf77e582f9503f0afa92c90d70c64a1fbeb7caeee1c8d5a948

134 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a high-confidence heuristic indicating it's a phishing lure for free downloads, directing users to a suspicious URL. ClamAV also detected it as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect users to malicious content, likely for further exploitation.

Machine Learning

Nyx PDF Classifier malicious score 0.9064

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://trafficel.ru/aws?utm_term=lcm+and+gcf+word+problems+worksheet PDF link annotation
- https://static.s123-cdn-static.com/uploads/4500883/normal_5ff4c11f6d7ca.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4388174/normal_5ff630de3572b.pdfIn PDF document text
- https://wofexajolevesi.weebly.com/uploads/1/3/5/3/135302186/walaberazum_reruvugavewodog_jezipifibugav_kunokebusew.pdfIn PDF document text
- https://s3.amazonaws.com/mukut/actinomycetes_classification.pdfIn PDF document text
- https://s3.amazonaws.com/tunenijexe/os_blackberry_9930_terbaru.pdfIn PDF document text

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