Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f03743ce54955e7…

MALICIOUS

PDF

75.5 KB Created: 2021-02-18 16:26:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c983b809e16c68687c7edd0b6e40ec0a SHA-1: 11651fcf1c8aab156db1c8f742eaec3e3dad8d64 SHA-256: 3f03743ce54955e738e9e365d4bc469b61cb9583fb6dbfcdb6c382029f878c6f
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a URL that appears to be a lure for downloading game-related files, suggesting a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to trick users into downloading further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/wix?keyword=call+of+duty+black+ops+2+apk+%252B+obb
    • https://vakenufepuxino.weebly.com/uploads/1/3/4/5/134529081/398987.pdf
    • https://cdn.sqhk.co/moxelutedoje/je2hbia/75079872336.pdf
    • http://latuha.com/soccer_star_clicker__201935m89.pdf
    • https://cdn.sqhk.co/gederanew/lTHohbj/12783089100.pdf
    • https://wufonujixu.weebly.com/uploads/1/3/4/3/134386315/subawa.pdf
    • http://beliyden.xyz/hungry_shark_hile_apk_indir_cretsiz1h1hi.pdf
    • https://rikovikoxeko.weebly.com/uploads/1/3/2/7/132740842/03fdbb0.pdf
    • http://migerov.xyz/bcbsil_member_claim_formf2jbb.pdf
    • http://mybestchan.online/aggiungere_stickers_a_whatsapp04pbt.pdf
    • http://wirelessinfo.ru/98667993236vvyqc.pdf
    • http://buyfastedcircle.xyz/convertidor_de_gramos_a_litrosan6yo.pdf
    • https://gufekesunix.weebly.com/uploads/1/3/4/8/134888283/ec4f3177c4793.pdf
    • https://cdn.sqhk.co/nisugavu/hjirXia/wujiwub.pdf
    • http://ru-en.xyz/the_boy_who_harnessed_the_wind_chapter_1-4_summarywa73s.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xugibomexepef.rf.gd/galvanized_sheet_rust_prevention.pdf
    • http://zozezofi.rf.gd/bringing_them_home_report_essay.pdf
    • http://dimaninerif.rf.gd/game_guardian_virtual_space.pdf
    • http://xamusewegelaru.rf.gd/drawing_angles_with_a_protractor_worksheet.pdf
    • http://xesogopobatobop.epizy.com/bls_aha_2018.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_off0000e8db.bin
d7914dfa34b70945cbf75d07e3f2e2c48cbc392b7d6ed012ad18d2a128ebc25f
pdf-font-stream PDF embedded font (sfnt) at offset 0xE8DB 5396 bytes
font_01_sfnt_off0000fb4f.bin
cc1f2a7fd1477cb3338a1564c6cf330f47d25330a15e5532e3b8fbafbf969210
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB4F 10916 bytes