Malicious PDF — malware analysis report

Static analysis result for SHA-256 c74fe1bea5386288…

MALICIOUS

PDF

74.8 KB Created: 2021-02-09 07:12:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b4bbb8658f29777d224ae9d1d82658d4 SHA-1: b6a6e5a57bd484539dc335f163007b0835fdecb6 SHA-256: c74fe1bea5386288760e163d1048461c3873ef9a5c9adc5e8d181393319fb81c
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL points to a resource that appears to be a lure for a certificate template, likely a phishing or scam attempt. Although no scripts were explicitly extracted, the PDF format itself can embed JavaScript, which is often used to download further payloads or redirect users.

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
  • 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://seumenha.ru/aws?utm_term=certificate+of+participation+template+word
    • https://cdn.sqhk.co/kowalaxu/huXbuhg/troll_face_quest_classic.pdf
    • http://tdsevsvet.ru/xawopipikopikelixatujibuskikr.pdf
    • https://cdn.sqhk.co/tazifawixax/HhjjZgh/tujeluvigonugaxiji.pdf
    • https://cdn.sqhk.co/pivugisaxap/gcHfghG/vejirirexokobomur.pdf
    • https://cdn.sqhk.co/tipefimex/w1oKMig/cash_claw_machine_arcade_near_me.pdf
    • https://static.s123-cdn-static.com/uploads/4389080/normal_5fdd3611855cf.pdf
    • https://cdn.sqhk.co/retesixabe/fWcAkgg/w3schools_php_session.pdf
    • http://kdghy.online/dilbar_new_3d_video_song3zuu2.pdf
    • https://cdn-cms.f-static.net/uploads/4465151/normal_6013b1688fb22.pdf
    • https://cdn-cms.f-static.net/uploads/4413696/normal_60112d09ad651.pdf
    • https://static.s123-cdn-static.com/uploads/4393348/normal_5fef7f8408d90.pdf
    • http://verifedform.com/landmarks_in_humanities_3rd_editionw08ei.pdf
    • http://tirudibemaj.22web.org/85627629775.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jusudab.epizy.com/jaduporetosa.pdf
    • https://s3.amazonaws.com/sasufufa/boss_new_punjabi_song_pagalworld.pdf
    • http://kodugexibitomo.rf.gd/xolawuvogak.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9d3.bin
b0892f27783185b63a32fcfd51ae05821923896661060482fcf18748266769fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE9D3 5120 bytes
font_01_sfnt_off0000fb38.bin
bfbeac01b5dd689fb684dfe6fda6288c14993d160dc63aded474b24a149fea35		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB38 10136 bytes

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