Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f10f014fd75ac5f…

MALICIOUS

PDF

66.8 KB Created: 2020-12-19 19:40:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: a94ae6a4c0f1deb4df2eb7db63b86958 SHA-1: ce48ab1b5c90af48da611c87d50c177c18057ab8 SHA-256: 6f10f014fd75ac5f39a70b3b9b4a984bffa2143108810d5dfee42614d50adef1
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains heuristics indicating it is a phishing lure, specifically using an SEO redirector to disguise a malicious link. The embedded URL `https://trafffe.ru/strik?utm_term=realm+defense+game+guide` is identified as the primary indicator of this phishing attempt. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest a phishing attack pattern.

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://trafffe.ru/strik?utm_term=realm+defense+game+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4481665/normal_5fa8c8dd1eb90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372960/normal_5f8edaac30b25.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378848/normal_5fa33488160a6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413975/normal_5fca5fe4ab082.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460680/normal_5fb6d5bd86014.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495849/normal_5fb8b1f8c14d1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459464/normal_5fcb75a671437.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426550/normal_5fb8054f184cd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pusixa/elite_netflix_imdb_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/newopetusam/champion_to_ngk_cross_chart.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc59c07ea4a794d56653e3e/t/5fcd5e0d1e1a4d7de13cc450/1607294477456/duxuse.pdfIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/69388760005.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/15094864414.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/aztech_homeplug_hl117ew_manual.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_off0000ca59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA59 5136 bytes
SHA-256: 89d1ef4ab3ecdd6bddcdc603d60b647a6ff8c7966fc809c82efb18dd0220a817
font_01_sfnt_off0000dbcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBCC 10304 bytes
SHA-256: 1a9f4e82c599d6c3229893acfe774d255958b05bcffb73f455b98eced2054068

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