Malicious PDF — malware analysis report

Static analysis result for SHA-256 50bc8c7c82b16ae8…

MALICIOUS

PDF

70.8 KB Created: 2021-02-28 10:15:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 540c179086249ced5c06891eef27c5d1 SHA-1: 83c3f33a7ad3907648f8c5772bc73c467ae6862a SHA-256: 50bc8c7c82b16ae8a2f7366499a4dc2df5a7c5fde1a6a2fa4dbdf24c89045e87
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://vilenefex.ru/award?keyword=jual+samsung+jitterbug+touch+3 PDF link annotation
    • https://sowimarigakuni.weebly.com/uploads/1/3/4/7/134705136/noraferopa.pdfIn PDF document text
    • http://adyga.site/dragon_quest_11_character_skill_guidets968.pdfIn PDF document text
    • https://pedexanagokol.weebly.com/uploads/1/3/4/6/134635549/079297.pdfIn PDF document text
    • https://cdn.sqhk.co/wizokawoxo/d2DSgh5/taboneraroturidopago.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500677/normal_60373cbd80d1a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487382/normal_6032fb1ad6fd4.pdfIn PDF document text
    • https://moraraxewurazi.weebly.com/uploads/1/3/4/0/134042425/4228689.pdfIn PDF document text
    • http://pressit.fun/kuzesubanimosutugezoweeiq0z.pdfIn PDF document text
    • http://sokixatov.mywebcommunity.org/python_pandas_tutorial_for_beginners_youtube.pdfIn PDF document text
    • https://gugagefa.weebly.com/uploads/1/3/4/3/134343265/tafimuxijojifivi.pdfIn PDF document text
    • https://cdn.sqhk.co/xorilulog/ibgf7QO/ruxokiduni.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368227/normal_6004a65f2ceed.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/mamukawaxatali/71469383482.pdfIn PDF document text
    • https://s3.amazonaws.com/bexolamabad/psychology_facts_in_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/watajive/persepolis_book_cover_analysis.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_off0000da2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA2C 5580 bytes
SHA-256: b570c8004374ec726c7f88b7f9bbcd67b4b9c2953790e51f398aee27a9f5a707
font_01_sfnt_off0000ed02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED02 9784 bytes
SHA-256: d7f802143ba3afda796d0128274c58d83a03e123abfad0ffef092256d0d69792