Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a3e58111c253ea3…

MALICIOUS

PDF

50.6 KB Created: 2021-01-17 14:00:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 5d7ddb321e9887f0d16811112e897dd9 SHA-1: 17304c20ae583d3a195f6323e07ec6e4c7c49c5a SHA-256: 5a3e58111c253ea3df49917eab0ce473c464f37cd472f2954ae664cfba31a9f2
102 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF containing obfuscated text and a suspicious URL. Heuristics indicate it's a redirector link designed to lure users to a malicious site. ClamAV detection and ML classification confirm its malicious nature, likely as a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5648

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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://traffset.ru/aws?utm_term=wow+classic++date PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4447487/normal_5fc7572d29f38.pdfIn PDF document text
    • https://cdn.sqhk.co/fuludasowipu/cuCjhgc/ufc_254_date_australia.pdfIn PDF document text
    • https://cdn.sqhk.co/vikoparif/iawKr2a/melelaxiliwed.pdfIn PDF document text
    • https://cdn.sqhk.co/jenetuwuda/hczkhbp/6988547981.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490519/normal_5fd958ce24a7f.pdfIn PDF document text
    • https://cdn.sqhk.co/zibusisujijIn PDF document text
    • http://xenivut.epizy.com/18617858770.pdfIn PDF document text

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