Malicious PDF — malware analysis report

Static analysis result for SHA-256 f954078838e2ee39…

MALICIOUS

PDF

67.9 KB Created: 2020-11-21 08:51:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7015ae3ef99a814de5bd2bb0fdff78a2 SHA-1: 6f198e35195175ee1a376d78a227cccc0c30bc45 SHA-256: f954078838e2ee3904aec806e4c3b054a19d79e2ca36bc2520ca4e5b3077249f
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was identified as malicious by ClamAV and an ML classifier, with heuristics indicating it contains a redirector link for phishing. The document body, though partially corrupted, mentions 'Tube mate apk download', suggesting a lure for software downloads. The embedded URL points to a redirector, likely leading to a malicious download or phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 5

  • 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
  • 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://trafftec.ru/123?utm_term=tube+mate+apk+download PDF link annotation
    • https://nabutamu.weebly.com/uploads/1/3/4/5/134525390/sekudo.pdfIn PDF document text
    • https://viwosexoteb.weebly.com/uploads/1/3/4/6/134631328/valifozopimogo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368999/normal_5f89380061cc5.pdfIn PDF document text
    • https://tenabawik.weebly.com/uploads/1/3/2/7/132710661/monomomazaxum.pdfIn PDF document text
    • https://kafaziwe.weebly.com/uploads/1/3/1/0/131070109/bawexakidosawi.pdfIn PDF document text
    • https://panidulupeju.weebly.com/uploads/1/3/0/9/130969186/5754025.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/a56265ab-4849-4bc2-95d5-cad6b9ff522a/college_of_glamour_dnd_beyond.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8099daa-8f80-409c-a459-d4750ef08a01/mejagovep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/680d8c63-99cd-46e8-acf2-fcf81a599ab6/11099969434.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_off0000ce84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE84 5076 bytes
SHA-256: f1cfbcba661ee14663b9c2ffb6c2c31a6938d08582fd634776c8eb03750ec70a
font_01_sfnt_off0000dfc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFC4 10272 bytes
SHA-256: 763843f1a0fbe09d301e3d822a1fbe61ebf892c4055fc502b6e7bb2b087e0a5d

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