Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1bdae6b5cc08a2c…

MALICIOUS

PDF

73.3 KB Created: 2021-04-01 04:03:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d7302646237584fdc724b6ba88aa8add SHA-1: 633ef00e123d1a2e7600896da14f1d46eca0d508 SHA-256: c1bdae6b5cc08a2ca21f1679d1eee1b820d172f588d1398c912e957ea8731b42
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 identified as a phishing trojan. It contains an embedded URL that leads to a suspicious domain, likely intended to deliver a malicious payload or phish for credentials. The document body, though heavily obfuscated, suggests a lure related to downloading an application.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://lozipotod.ru/123?utm_term=bungkusit+rider+apk
    • https://cdn.sqhk.co/gebemiwisero/QHjgIwm/75454006280.pdf
    • https://cdn.sqhk.co/tajiwikiter/cgcZici/87284399920.pdf
    • https://cdn-cms.f-static.net/uploads/4388293/normal_600b3f59d9242.pdf
    • https://cdn.sqhk.co/girewobo/DFihjhX/nalozebofokokomilik.pdf
    • http://forovasax.medianewsonline.com/16916309631.pdf
    • https://cdn.sqhk.co/xovatagemi/jfhgmjf/sword_build_albion_online.pdf
    • https://cdn.sqhk.co/mozesefoso/ibOhhdW/41551158887.pdf
    • https://static.s123-cdn-static.com/uploads/4485927/normal_5ff3d220e3421.pdf
    • https://cdn.sqhk.co/vekuperik/fvIUdhb/lewexisoresogegoma.pdf
    • https://cdn.sqhk.co/wuzosiboweja/jdhfjcj/lirirazugebokukipetafiwaj.pdf
    • https://cdn.sqhk.co/nukuzulu/63hjjfL/98785537846.pdf
    • https://cdn.sqhk.co/zokuzadisup/heyrCVs/zenavosuka.pdf
    • https://cdn.sqhk.co/wusakituzu/gh6jhl6/spin_blade_10-_30.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/81e73ebf-85e4-4224-b2d7-6fb64fce1e7c/bopimesesow.pdf
    • http://fezimebuwoki.rf.gd/pokitonurozawateb.pdf
    • http://vigexosav.myartsonline.com/36934016315.pdf
    • https://uploads.strikinglycdn.com/files/607b921d-4bde-48e6-bd3d-0b510d0b0a9a/how_to_find_life_coach.pdf
    • http://sewekovekejir.epizy.com/22805307810.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_off0000e074.bin
418945dcef0640c9593295c1687f71948cb2161936d14a514a7460629dd919f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE074 5208 bytes
font_01_sfnt_off0000f241.bin
72cfa1c9d1326a82b63bc5e34f55f1a35c73959e65d66926ac392dac6f2d3586		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF241 11096 bytes

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