Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c9b58604808fec9…

MALICIOUS

PDF

76.2 KB Created: 2020-11-30 11:14:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c34d4b0c39602f1f0afc90ddf1d1cd85 SHA-1: 74e1e45c50d6e0733772874835a7f1d8f0d3f376 SHA-256: 8c9b58604808fec90f2725e7799a3c0f0e12d4a18cd18bd66b932bf3bf9392fe
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a heuristic firing for a redirector link, specifically identified as a 'free-download phishing' lure. The embedded URL, https://traffset.ru/strik?utm_term=android+pie+apkpure, is directly associated with this phishing attempt. ML and ClamAV detections further confirm the malicious nature of the PDF, indicating it's likely a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffset.ru/strik?utm_term=android+pie+apkpure PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450139/normal_5fa71b569b044.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373997/normal_5f91648ec5a0f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366958/normal_5f875ca5d3ec9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491151/normal_5faaa3cf0028b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378425/normal_5f91c4766cd2a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384299/normal_5f8ec1e6f0387.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/49b2791c-6b5a-4a1c-a69a-93b08f7e3018/pavuvo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0ca7740f1034a5ca83b63/t/5fc283642dd96f59183fee94/1606583146949/the_battle_of_tippecanoe_in_1811_resulted_in.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d31e5d4d-051e-46ce-8a6c-1ae4aa03c63b/zigilominewejiporireton.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e24ca552-8e76-48a7-8688-99fa994e5845/44237032224.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf90e3485235c868b3646/1606285582781/pamugaxo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ecbf265-6a4a-49b8-bf26-3e543b3c87fb/45684023300.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd092b45ca4f790267c427/1606224174202/the_blue_danube_waltz_lyrics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/859d7c06-d79f-41bf-b492-6efbb838671b/58756348937.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe294a3485235c868ea9e2/1606297933753/everyday_vocabulary.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

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBAB 4796 bytes
SHA-256: d99b799d6da3159515efab08885d7683b47428db3722f10902af7468ce0fd9a6
font_01_sfnt_off0000fc09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC09 11764 bytes
SHA-256: 90c232d7ecd69109a0f552148a30be1829f68c500bc9a29d5f2a84793a7c6b02

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