Malicious PDF — malware analysis report

Static analysis result for SHA-256 b65a2a61085a8b15…

MALICIOUS

PDF

67.9 KB Created: 2021-02-25 23:07:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: b38cb9634064e9fe05354d90f678ff34 SHA-1: be9ce77f97cb1403b44e44132beabec89423e5e9 SHA-256: b65a2a61085a8b151d1640f9dcba467df3dec76f752bea2e046b04baeb7eb9df
126 Risk Score

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 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://leonvi.ru/award?keyword=cool+interior+house+ideas+minecraft PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4408190/normal_5ff6043e8626b.pdfIn PDF document text
    • https://pesopipuni.weebly.com/uploads/1/3/2/3/132303043/1390e0b3.pdfIn PDF document text
    • https://cdn.sqhk.co/loganidob/cfgdgiD/top_selling_singles_of_the_90s_uk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409095/normal_5ff2b0cbbba92.pdfIn PDF document text
    • http://vashobereg.com/zopupto1b1.pdfIn PDF document text
    • https://daxigowopijadek.weebly.com/uploads/1/3/0/8/130814785/2620c5d3509.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367644/normal_5fd909741bc11.pdfIn PDF document text
    • https://wajovojov.weebly.com/uploads/1/3/4/6/134652085/2118929.pdfIn PDF document text
    • https://sinuvuliwazima.weebly.com/uploads/1/3/1/8/131871572/volefedunefu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487187/normal_60185517e0eb9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425255/normal_5ff9789d03ea8.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/jujojomojemiz/31794294601.pdfIn PDF document text
    • https://s3.amazonaws.com/sowirutelevolur/top_questions_asked_in_interview_with_answers.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_off0000cd68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD68 5168 bytes
SHA-256: a4fe761fa7f2b43562807d9f8a633f6057ef7c1ca3c3210b7f403237a9e47ae9
font_01_sfnt_off0000dec6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEC6 10540 bytes
SHA-256: 570ea459ef4b83603dd384bbd226196dc1f476f4f5132ded39c2a87296158450