Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ef24e0469d91de7…

MALICIOUS

PDF

83.4 KB Created: 2021-02-28 22:54:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 90d447dd0d0d4e8f1f06fe067956a29b SHA-1: 5c783332bff2a3ebcac4963c97a6e30a09e895dc SHA-256: 3ef24e0469d91de7aa261f9cc21c3a3ed07ec881a86c589c8391604ede0ed7ac
96 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with the primary one being 'https://dugedepap.ru/strik?utm_term=how+to+fix+amp+error+on+pioneer+radio'. This URL, along with others, suggests a phishing or malicious content delivery attempt. 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-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://dugedepap.ru/strik?utm_term=how+to+fix+amp+error+on+pioneer+radio PDF link annotation
    • https://cdn.sqhk.co/gorokipo/haK6KLv/xapejejovofowupogudogif.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417046/normal_5fc768cc85bb8.pdfIn PDF document text
    • http://copalofa.site/774316876763jkpr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368219/normal_5ffca7b4a01b2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381091/normal_5fed5ece83dbc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496005/normal_5fff46617a7da.pdfIn PDF document text
    • http://tibetterrier.ru/livro_guia_completo_de_aromaterapiadtqdt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462093/normal_6011974fe6eec.pdfIn PDF document text
    • https://cdn.sqhk.co/xanikadir/ijbjjcI/interesting_facts_about_dogs_teeth.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495058/normal_600601764dd75.pdfIn PDF document text
    • http://reestr.site/30_day_weight_loss_diet_planvtiuh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367914/normal_60195a873b634.pdfIn PDF document text
    • http://shoop-fk.ru/who_is_the_most_popular_kpop_girl_group_in_the_philippines7ux7m.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447265/normal_6024ef01ddfa7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tososite.onlinewebshop.net/stanley_45_combination_plane_parts.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_off000108b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108B3 5100 bytes
SHA-256: f6b7bd9ae92953fd29fb76e348392f62020c82a32b01d531051cc1a33d2afcfb
font_01_sfnt_off00011a0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A0B 11280 bytes
SHA-256: 186821074ead1712bec34a98db20f28968d085623420e17a9604f5c444a28c2c