Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb7f3984e968a4b0…

MALICIOUS

PDF

74.8 KB Created: 2020-12-31 08:44:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 1ef96dccac109023b1b0f8cc8a2d7380 SHA-1: bbdecd703d41da7d7366d8e58a430029cdfbd953 SHA-256: fb7f3984e968a4b0f6dfa738c4541fb671000a0d6e1c6b2e8b380781d58c866c
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 site offering a download for 'Gta 5 apk download for android softonic'. This is a common phishing tactic to trick users into downloading malware. The ML classifier and ClamAV detection strongly indicate malicious intent, and the embedded URL is the primary indicator of compromise.

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://traffset.ru/123?utm_term=gta+5+apk+download+for+android+softonic PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450356/normal_5fa09a98072ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369935/normal_5fa37485d5f01.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412762/normal_5f95cb64ac5d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386824/normal_5fa7c52845212.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379960/normal_5fdef78033d58.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495838/normal_5fe9dc38c8e0d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473044/normal_5fe652ce998d0.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/lovomijelun/family_tree_spreadsheet_excel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf54b268-6601-49a9-ad44-fd378eb30100/35283308661.pdfIn PDF document text
    • https://s3.amazonaws.com/bevekizadoxuj/driver_bematech_mp-_100s_th.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/continuous_time_convolution_calculator.pdfIn PDF document text
    • https://s3.amazonaws.com/sefabe/lofulozegu.pdfIn PDF document text
    • https://s3.amazonaws.com/jitimesolagun/vejado.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/ppt_templates_free_for_business_plan.pdfIn PDF document text
    • https://s3.amazonaws.com/piradi/in_the_mouth_a_desert_pavement.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_off0000e95e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE95E 5460 bytes
SHA-256: 920b87961a9f930505de1d2e2d9329eed68c6dc1deca3efedc1d844580f91aa6
font_01_sfnt_off0000fc23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC23 9828 bytes
SHA-256: 3630308d74dcf80d332198a033b83523343b2c5c46183652857ade821d283690