Malicious PDF — malware analysis report

Static analysis result for SHA-256 e176c803fbd0ca46…

MALICIOUS

PDF

67.0 KB Created: 2020-12-22 07:30:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 92806b43a08c3d7de27d900ece530f7d SHA-1: 124b7063c9cba68579eb2318955424c348be1838 SHA-256: e176c803fbd0ca46d78f98afeca46cae9994ec0e7ae07587ff53f994d92008f5
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains an embedded URL that redirects to a suspicious domain, likely intended to trick the user into downloading malware disguised as a video player. The ML classifier strongly indicates malicious intent. No scripts were extracted, but the presence of an external URI and the ML detection suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://traffine.ru/strik?utm_term=all+video+player+hd+apk In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379380/normal_5fbd9b1c68e1d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369629/normal_5f8b115732fb6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408481/normal_5fe0a7141d094.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5ae009d-021b-4842-9079-fe6b8a10d04d/vekofimu.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/15897732051.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/veterinary_pathology_atlas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cbeb5932-46e8-469f-9a43-aa94313e9601/topapaxone.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc27a90c14dfd36fefb8bc0/t/5fc45fe2bc819f1cf464c21c/1606705123112/xezitanasobabipu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/020310c2-5ff2-4b66-a397-96742b280bd3/rulajapaxovawogo.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/dosiguboji.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/42257453419.pdfIn PDF document text
    • https://s3.amazonaws.com/penefelomiju/munodinufetabug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abceb3a3-ead3-420d-89c3-72081c3a8a15/dude_and_zombies_tyrone.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwuzerijofa/96112239563.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cabe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCABE 5084 bytes
SHA-256: 5af2c05fd9691d245072a4631790e928db05f9da8c1be10ffba27537d11c7f46
font_01_sfnt_off0000dc0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC0D 10472 bytes
SHA-256: 1ecba6b058d6e6f046fa3890e84910b1ca81b5d67526ad2e4319eae8be07d397

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