Malicious PDF — malware analysis report

Static analysis result for SHA-256 b95eb418ea4637f4…

MALICIOUS

PDF

77.6 KB Created: 2021-01-14 09:19:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: b17fa2508915905b99ff5f89dc394062 SHA-1: 78b99c5b2fb6278e5c942038e4a68e25398355b0 SHA-256: b95eb418ea4637f4edd6e0230e99364d9bc9edb45a24f0136e6c81462b4de71b
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'traffmen.ru'. This URL is likely used to redirect users to a malicious site for phishing or to download further malware. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL is sufficient to infer a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://traffmen.ru/123?utm_term=canon+eos+30d+review In PDF document text
    • https://site-1174507.mozfiles.com/files/1174507/takeshima_island_dispute.pdfIn PDF document text
    • https://site-1177442.mozfiles.com/files/1177442/world_cup_soccer_2026_tickets.pdfIn PDF document text
    • https://site-1175032.mozfiles.com/files/1175032/29191267293.pdfIn PDF document text
    • https://cdn.sqhk.co/kitijorawul/heudEct/41157155783.pdfIn PDF document text
    • https://site-1236926.mozfiles.com/files/1236926/toe_nail_designs_red_white_and_blue.pdfIn PDF document text
    • https://site-1175290.mozfiles.com/files/1175290/texas_state_parks_rv_campgrounds.pdfIn PDF document text
    • https://site-1175951.mozfiles.com/files/1175951/86233267661.pdfIn PDF document text
    • https://site-1172743.mozfiles.com/files/1172743/baby_yoda_costume_infant.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/87710194894.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/mozag.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/level_anticoncepcional_bula.pdfIn PDF document text
    • https://s3.amazonaws.com/gixirojozogufux/buvufibekijanegof.pdfIn PDF document text
    • https://s3.amazonaws.com/vibasujefir/bolisifebese.pdfIn PDF document text
    • https://s3.amazonaws.com/tobobowu/2348093527.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0A8 4976 bytes
SHA-256: e8f68e504bbcb35397e1fe1561cf563a5c5551940b9365bc555d967ddd9c421d
font_01_sfnt_off0000f1a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1A7 12820 bytes
SHA-256: c59ca1c39bada50310a0efc33e5316d179e70dc3162c37cc82754ea9076abf9d
font_02_sfnt_off00011a51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A51 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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