Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ac741f179b082bf…

MALICIOUS

PDF

72.4 KB Created: 2021-03-08 10:51:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1b3a33368b12321818879758b253e08f SHA-1: 2b9a322ab96c4f24a5a8ebcd318170c3268f2d09 SHA-256: 1ac741f179b082bfd6015acec29178e703b109a03d243c45d06d7d7f732ee3a5
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to contain keywords related to vehicle sales, suggesting a lure to entice clicks on the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://botokaw.ru/strik?utm_term=2005+cadillac+cts+for+sale+in+saskatchewan
    • https://static.s123-cdn-static.com/uploads/4426062/normal_5ff54995d217e.pdf
    • https://nawigabijaku.weebly.com/uploads/1/3/4/5/134599080/pogimudatilawakis.pdf
    • https://kufavugozit.weebly.com/uploads/1/3/5/3/135309998/medogavudo.pdf
    • http://jarobadut.22web.org/html_form_multipart_mixed.pdf
    • https://cdn-cms.f-static.net/uploads/4497687/normal_601728093307e.pdf
    • http://tiwirodizefa.iblogger.org/sajitusefogape.pdf
    • https://muxudopigudud.weebly.com/uploads/1/3/4/4/134490596/2529576.pdf
    • https://cdn-cms.f-static.net/uploads/4490961/normal_6044df0e271c2.pdf
    • https://cdn-cms.f-static.net/uploads/4476930/normal_5fd1b7b83f0aa.pdf
    • http://sogikujuwawim.22web.org/insert_into_sql_php_form.pdf
    • https://static.s123-cdn-static.com/uploads/4392191/normal_5ffb3d7cbe685.pdf
    • http://pojekofa.iblogger.org/pexivazadixuxas.pdf
    • http://nozudozaki.22web.org/dinasefukadofal.pdf
    • http://jutovutivori.22web.org/50053386351.pdf
    • https://ragekadenolobo.weebly.com/uploads/1/3/0/9/130969790/xivepifam-tavamilirejeboj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/e4746e2f-4045-4c6e-b14e-2ba6ad29b44a/clipper_ship_foundation_coating.pdf
    • http://poresiz.epizy.com/36451279311.pdf
    • http://vaxomuterok.epizy.com/vamiruloripetibaxave.pdf
    • http://safipalibeso.rf.gd/three_fold_brochure_template_google_docs.pdf
    • http://fogevodazeta.epizy.com/19577693807.pdf
    • http://lowavizoviwu.epizy.com/14412169837.pdf
    • https://uploads.strikinglycdn.com/files/83b985e8-f267-42e9-be19-1e9de3f55426/27568400415.pdf
    • https://uploads.strikinglycdn.com/files/b7ffaef8-c2b7-45f4-8759-cb42b1435f94/gozaxegagebusetem.pdf
    • http://tutapijuw.rf.gd/69606606312.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_off0000d9e1.bin
6c3fcf58b05aeda94122900f1658fc0339ff4a50c5eabf685ab69d5974b7f93f
pdf-font-stream PDF embedded font (sfnt) at offset 0xD9E1 5568 bytes
font_01_sfnt_off0000ece3.bin
b99d610a183ffcf8b9c36575a30b14ade719ccece3b960860e284181320aa278
pdf-font-stream PDF embedded font (sfnt) at offset 0xECE3 11492 bytes