Malicious PDF — malware analysis report

Static analysis result for SHA-256 70b55e13e9e2ee72…

MALICIOUS

PDF

58.6 KB Created: 2021-02-26 03:33:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 3d28592e310e45ac77678c12161a8496 SHA-1: 8edd6eaa39b948d61e243c7e8cbcdbf88f7afe81 SHA-256: 70b55e13e9e2ee724ce0ff89a844d130d3d3a0bb8523f3e6c245ac3e2df79660
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and ML classifiers, indicating a phishing attempt. The document body and heuristics reveal a lure related to 'letter of recommendation' which redirects to a suspicious URL. The presence of embedded URLs and the nature of the detection suggest it's designed to lead users to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6699

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
  • 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://seumenha.ru/award?keyword=how+long+for+a+letter+of+recommendation PDF link annotation
    • http://wisatemubudu.medianewsonline.com/99222354598.pdfIn PDF document text
    • https://cdn.sqhk.co/fevivesuxofo/x940Mhg/xipibobetowamalot.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487201/normal_5ffb42f7112dd.pdfIn PDF document text
    • https://cdn.sqhk.co/nawakema/ccG2hfD/46373634915.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427795/normal_6004d33e55fb5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393348/normal_5fe5293b706a7.pdfIn PDF document text
    • https://cdn.sqhk.co/zumedizojas/gL8ARgh/31643776310.pdfIn PDF document text
    • https://cdn.sqhk.co/rorefevobo/widifgd/slot_racing_company_facebook.pdfIn PDF document text
    • http://gatorama.fun/fenojimeluje0xoam.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378852/normal_5ff82a2e60241.pdfIn PDF document text
    • https://cdn.sqhk.co/gatavikap/hfUtggi/6751855721.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382973/normal_5fd91c7be030c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490961/normal_6007b1f28ebe6.pdfIn PDF document text
    • http://wutejaxevewef.myartsonline.com/62093393816.pdfIn PDF document text

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