Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c2afa47ad917741…

MALICIOUS

PDF

72.5 KB Created: 2021-02-16 12:26:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: c28818b7898520dca4531c511222431e SHA-1: c05d8f5d54e88dd3f63330baa8d9ab762dc4dc60 SHA-256: 0c2afa47ad91774160cea2baa328e0c631fe786d4b1cfa0532bda752915237b8
96 Risk Score

Malware Insights

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

This PDF document contains an embedded URL that redirects to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, appears to be a lure related to network security to entice users to click the malicious link.

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://baarspo.ru/wb?keyword=how%20does%20network%20security%20works PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4481163/normal_5ff40e6c4c5cc.pdfIn PDF document text
    • http://repair-planshetov.ru/xixejelxy09u.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378843/normal_5fe1e9783386b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443357/normal_601cd073c438d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373239/normal_5ff303d229686.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477878/normal_601097500af7a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469116/normal_60045f2ce7af7.pdfIn PDF document text
    • https://cdn.sqhk.co/rorezina/iJLsjhN/1869358752.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499972/normal_601208586c1d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384642/normal_6017977d4dbbc.pdfIn PDF document text
    • https://cdn.sqhk.co/kimefutif/k7mgchj/71325892787.pdfIn PDF document text
    • http://natlab.ru/luk_catalogo_embragues0h5fw.pdfIn PDF document text
    • https://cdn.sqhk.co/lozuzupadis/hhbKgjg/spray_fast_stencil_art_templates.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418401/normal_5fce5e1bda645.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/39958731708.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dea4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEA4 4908 bytes
SHA-256: 70336946fa7c393c91f4183d56b2f5b2db05f9198ecb7072e474b1f17a6c2751
font_01_sfnt_off0000ef7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF7F 11036 bytes
SHA-256: 0c665fc93ecb51de089f249d032d01729d14362fc3f16fcd24b44fc987c265d8