Malicious PDF — malware analysis report

Static analysis result for SHA-256 47f02d89dedd0680…

MALICIOUS

PDF

72.8 KB Created: 2020-12-28 06:45:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 1417892dba5db6b77c3312038c5e2e81 SHA-1: 7439a974c7d16605bbe2b793489fa3395c6bc197 SHA-256: 47f02d89dedd0680c20b3465c2749d8f6e83e8431d0b7ca612487d6a44203b24
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to other PDF files, suggesting a link farm or redirection mechanism. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. The embedded URLs are used to redirect the user to potentially malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=genetics+practice+worksheet+answers PDF link annotation
    • https://cdn.sqhk.co/xoluxuroku/dMOhgLA/7_up_pound_cake_recipe_allrecipes.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380881/normal_5fe0acb9510cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464877/normal_5fbc8a2110b54.pdfIn PDF document text
    • https://monotolifevi.weebly.com/uploads/1/3/4/6/134683372/ratojowud.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450156/normal_5fb3d5e69afc1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454052/normal_5fa60b7319fc4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498801/normal_5fafde6ab82e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454043/normal_5fbd3d967118a.pdfIn PDF document text
    • https://cdn.sqhk.co/fawabanof/cEZiigf/spiral_jump_ball_program.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/panalipolifod/jememet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e9f312d-5aa8-4f5d-9501-e23e2c78d3a5/formato_de_entrevista_de_investigacion_criminal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a30943b4-56b6-4d81-9289-e185cf4e5ca7/512_area_code_location_michigan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5baadde4-11f4-4560-94db-33be0b6608cf/31641638929.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47a79779-aa25-4df1-a1ea-776d0af6790d/watch_free_films_on_ps4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a549a91-fca1-41f7-825d-99492d9746c2/97064746554.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_off0000dee8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEE8 5176 bytes
SHA-256: f7a62baab29528e1996d83e167e9da4ba1d4c916b9ed084bdf3944de507431ea
font_01_sfnt_off0000f097.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF097 10960 bytes
SHA-256: 6993e4d68854f8f6bcac720a12f3881464df888d02972a1a26e1b7df1c527019

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