Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b01f8050b679a76…

MALICIOUS

PDF

79.7 KB Created: 2021-04-28 02:55:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 007475d4899ff49ef01ba86454714dfe SHA-1: edefdc28ea56e13a6dede2a854c9b184aa0e45b5 SHA-256: 2b01f8050b679a76df0a6176ebc9787db80041ce44ffa1137e821ee32fce2559
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely to host a malicious payload or phishing page. The document body, though heavily obfuscated, suggests a lure related to 'useful books for life'. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://kuzutuzo.ru/strik?utm_term=most+useful+books+for+life
    • http://1xbet-sportstavki.fun/kogafuvebabopuykk.pdf
    • https://cdn.sqhk.co/pawapoma/hjimlGc/85755064298.pdf
    • https://cdn.sqhk.co/nefikelifu/jbNhdpg/lmk_q_a_and_make_friends_apk.pdf
    • https://cdn-cms.f-static.net/uploads/4366980/normal_604797ae547ef.pdf
    • https://cdn.sqhk.co/jerowerar/jftiaje/jufedexuzivujekuzuw.pdf
    • http://insuranceautousa.com/27555113074ncxdj.pdf
    • https://cdn.sqhk.co/vurikede/haif4d1/hidden_valley_golf_course_delaware_ohio.pdf
    • http://remontlegko.info/54512323918j91oh.pdf
    • https://static.s123-cdn-static.com/uploads/4385216/normal_5fe24fdcd6c4c.pdf
    • http://monogawuw.iblogger.org/3553517194.pdf
    • http://govnosiakxws.online/89591837143fwezi.pdf
    • https://cdn.sqhk.co/livulopo/SOzihMn/32201316048.pdf
    • http://vaxuserinux.22web.org/omicron_test_universe_software_manual.pdf
    • https://static.s123-cdn-static.com/uploads/4377113/normal_600019c3f01b0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kuwixogup.rf.gd/86904245020.pdf
    • http://janevowox.epizy.com/setalojevebipewumozufe.pdf
    • https://s3.amazonaws.com/tevomenil/18879255465.pdf
    • https://s3.amazonaws.com/vavejijitatofu/70853003195.pdf
    • http://wikeratofi.epizy.com/vafewidijutatuvojagi.pdf
    • https://s3.amazonaws.com/mikibetiv/51748813896.pdf
    • http://texatopewewew.epizy.com/taxavufoje.pdf
    • https://s3.amazonaws.com/marimejerebo/36950457049.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_off0000fa32.bin
73dbaf68d82bd2513238dfea7ccd34c7ed7ecb913bd354f4c229c845f1f9fa99
pdf-font-stream PDF embedded font (sfnt) at offset 0xFA32 4760 bytes
font_01_sfnt_off00010a82.bin
d7a7e0008ececbb594d9f5cd242958a98476ed3b22e5412965e14cd9bc84a3a4
pdf-font-stream PDF embedded font (sfnt) at offset 0x10A82 11292 bytes