Malicious PDF — malware analysis report

Static analysis result for SHA-256 72a5d2d4bd4a5abf…

MALICIOUS

PDF

62.9 KB Created: 2021-02-17 22:21:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 07eae7aecc72564b2eda1b54a36879eb SHA-1: e7c6fd5679dafc554d6193b3bac289a3a2468f1e SHA-256: 72a5d2d4bd4a5abf3c02263b0f69036c674001380be88e93fd1218b15ddd0442
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://bologen.ru/123?utm_term=motorola+xtl+1500+manual+espa%25C3%25B1ol PDF link annotation
    • https://cdn.sqhk.co/zebimapajod/jgjh3ie/detodegejo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469852/normal_5fe65ebb85c27.pdfIn PDF document text
    • https://sididipukiwe.weebly.com/uploads/1/3/1/3/131398020/penige-vijuzipuk-kedakofuza.pdfIn PDF document text
    • https://nopovufarake.weebly.com/uploads/1/3/1/3/131379277/b5286f6b95.pdfIn PDF document text
    • https://lewezuwarekizes.weebly.com/uploads/1/3/4/0/134040914/7919829.pdfIn PDF document text
    • https://cdn.sqhk.co/papebikuwi/dgzV9ii/32348005072.pdfIn PDF document text
    • https://cdn.sqhk.co/ropobemuma/cjhhaid/93989775570.pdfIn PDF document text
    • https://duxoberadu.weebly.com/uploads/1/3/4/7/134718286/8533197.pdfIn PDF document text
    • https://rajuputodetu.weebly.com/uploads/1/3/4/6/134682309/e81a0f37d7ae20.pdfIn PDF document text
    • https://kuzasafeg.weebly.com/uploads/1/3/4/5/134586407/rukotubeg.pdfIn PDF document text
    • https://cdn.sqhk.co/mugegiduveb/ihibOja/oscar_wilde_plays_online.pdfIn PDF document text
    • https://pomulopegodetom.weebly.com/uploads/1/3/1/3/131384256/7942bb75090.pdfIn PDF document text
    • https://cdn.sqhk.co/maxanogefo/hhfhb1Q/nick_and_aaron_carter_net_worth.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lilivuxaja.rf.gd/34702084517.pdfIn PDF document text
    • http://bosovegiged.rf.gd/terrestrial_biomes_chart_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_off0000b819.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB819 5568 bytes
SHA-256: 202bf9e6f3945931e57f27353b4cc4e56026e24afe8c1ebf361987eecfc4e827
font_01_sfnt_off0000cac0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAC0 9996 bytes
SHA-256: 255a95bc5d81f727a8df17db9668dffedcb9db4a168e3b3c1e1c18199d9b6dbd