Malicious PDF — malware analysis report

Static analysis result for SHA-256 c851a53f522e017c…

MALICIOUS

PDF

71.6 KB Created: 2021-06-17 08:41:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c941af27b686748bd35b141691dcba20 SHA-1: 03536d2a0afb10d53f7a9a71c63cd207bf1bf8e7 SHA-256: c851a53f522e017c2f19ad072a5cc87ef2633b800f2022c116c6858998ca3ddc
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that, when clicked, likely leads to a phishing or malware download site. The document body, though heavily obfuscated, appears to be a lure related to 'GTA 5 how to sell stolen cars'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

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://inwebjor.ru/uplcv?utm_term=gta+5+how+to+sell+stolen+cars
    • https://viajespereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc17057b602---fuveluwilidaborix.pdf
    • http://beiks.info/public/file/malibawajufuxezowiwoluv.pdf
    • https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606d5028894a1---ludadosulewavegewitaw.pdf
    • https://legacyltg.com/wp-content/plugins/super-forms/uploads/php/files/74bac96feae5cb016c0f9c791001025e/jekuwa.pdf
    • http://www.lbf-cosmetics.com/website/wp-content/plugins/formcraft/file-upload/server/content/files/160a2af5b73000---nolimapikiriz.pdf
    • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608078b757e9b---64897520783.pdf
    • http://crm333.com/documentos/file/fewaxozabezux.pdf
    • https://gradeagroup.com/wp-content/plugins/super-forms/uploads/php/files/ehsu8e29n315ljrpv53kp75djh/soxavedixazilemawotusix.pdf
    • https://forcechicago.com/wp-content/plugins/super-forms/uploads/php/files/b1dee81d3f27cc88d34314b4f2283fab/talaxeb.pdf
    • https://www.zaantraining.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16089d5bf1896f---zaxokomasavosuje.pdf
    • https://edoxmarketing.com/wp-content/plugins/super-forms/uploads/php/files/4q059a9p3sdshvrsaegnl2ns4u/bilor.pdf
    • http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608e9fe12c601---fovimuwuwuxuzedemuwixat.pdf
    • http://energy-labels.com/userfiles/file/12216761145.pdf
    • https://marciasmithconsulting.com/wp-content/plugins/super-forms/uploads/php/files/8f6186193ed0a71fe0b17373c2ac3e58/rusobalarukabuvolukerinef.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://lapdonline.org/file/rafagulokusapuzob.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_off0000db10.bin
d5326fee526e0d409097573609c4c63b372897bdb4575641343887ce84b073a7
pdf-font-stream PDF embedded font (sfnt) at offset 0xDB10 5136 bytes
font_01_sfnt_off0000ec97.bin
e1b2039672729ab93c466fa11b36840c8c522baeb6b2f8f3c46f54acdd53b828
pdf-font-stream PDF embedded font (sfnt) at offset 0xEC97 10900 bytes