Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc46d17e75f79471…

MALICIOUS

PDF

86.9 KB Created: 2021-04-29 20:02:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fc2a2572d233c71f3b74a461fc73edfd SHA-1: 14a6cfb5da958ab1b43e92237c3fe1cc66961b95 SHA-256: fc46d17e75f794717e7b682c3c9022d189c1636d988f19bed95b267e0e34e798
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'kuzutuzo.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to 'Harbor freight drill press keyless chuck', possibly to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://kuzutuzo.ru/strik?utm_term=harbor+freight+drill+press+keyless+chuck
    • https://cdn-cms.f-static.net/uploads/4388424/normal_60322e7699e51.pdf
    • https://cdn.sqhk.co/pavujakorige/ijbwhbF/lesson_plan_teaching_learning_process.pdf
    • https://vopukuno.weebly.com/uploads/1/3/1/3/131383764/7924759.pdf
    • http://yandex-delivery.cc/qualitative_research_versus_quantitative_research0leqd.pdf
    • https://cdn-cms.f-static.net/uploads/4489607/normal_60199a6359575.pdf
    • https://cdn.sqhk.co/wakewafo/4Fheja5/hammer_and_nail_gift.pdf
    • https://katifakemu.weebly.com/uploads/1/3/1/3/131381151/lanewinafad.pdf
    • https://static.s123-cdn-static.com/uploads/4487906/normal_5ff5b09d01de5.pdf
    • https://cdn-cms.f-static.net/uploads/4422135/normal_602456ef4e411.pdf
    • https://cdn.sqhk.co/sopiloroda/8jfDeN9/49804092368.pdf
    • https://static.s123-cdn-static.com/uploads/4464734/normal_60094f0ef2f59.pdf
    • https://static.s123-cdn-static.com/uploads/4384145/normal_5fe5890ad4cd5.pdf
    • https://cdn-cms.f-static.net/uploads/4427526/normal_605c8560be820.pdf
    • https://nuvitofoje.weebly.com/uploads/1/3/4/6/134640236/bedusebowajojez-pisavel-situbajogo.pdf
    • http://baykamif.space/nizutop2tp38.pdf
    • https://cdn.sqhk.co/gukitane/khjd78H/dunukadezip.pdf
    • https://cdn.sqhk.co/didatife/fYibnhf/23665318022.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/faluzotixupi/59798748708.pdf
    • https://s3.amazonaws.com/feliso/feedback_analysis_report_format.pdf
    • https://s3.amazonaws.com/tojabixefova/advance_directive_template_word.pdf
    • https://s3.amazonaws.com/tufujifinobiro/chhichhore_movie_songs_pagal.pdf
    • https://s3.amazonaws.com/nimuwet/xofejebewuguwebokigudute.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_off000110a4.bin
ed20d094f7c186d7998439344182c372767df860b3583df6785e850e963b02f8
pdf-font-stream PDF embedded font (sfnt) at offset 0x110A4 5684 bytes
font_01_sfnt_off000123f7.bin
e12d958188690a2abf4a6e4a27529255c92a0c70a456307b9015a9d34856b819
pdf-font-stream PDF embedded font (sfnt) at offset 0x123F7 12908 bytes