Malicious PDF — malware analysis report

Static analysis result for SHA-256 6796694fd6e79a48…

MALICIOUS

PDF

68.9 KB Created: 2021-02-09 23:07:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3e8a6d55c4620db64f0d3549224e7a0b SHA-1: 04f127a01d65fbb5419f622a5669a91fbc13ad9b SHA-256: 6796694fd6e79a4852ae812bb90128fe1f5f31d1cb0e7c304aaf195604466c0f
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://seumenha.ru/aws?utm_term=hong+kong+guide+map+pdf PDF link annotation
    • https://zemezomar.weebly.com/uploads/1/3/4/7/134711889/784423.pdfIn PDF document text
    • https://nanivenom.weebly.com/uploads/1/3/0/9/130969334/wufise.pdfIn PDF document text
    • http://artdebug.site/cubo_magico_formulaswe3r7.pdfIn PDF document text
    • https://banatili.weebly.com/uploads/1/3/5/3/135314160/31957b.pdfIn PDF document text
    • https://gejodawutu.weebly.com/uploads/1/3/1/1/131164152/5064183.pdfIn PDF document text
    • http://helpcenterbusiness.xyz/jizowixazapuzilarizedanawos.pdfIn PDF document text
    • http://wspring.space/4537477911056r3l.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412897/normal_600e42686881c.pdfIn PDF document text
    • https://tunedewujanan.weebly.com/uploads/1/3/5/3/135345761/4b2c3.pdfIn PDF document text
    • http://arfesopt.com/906714612619j9rr.pdfIn PDF document text
    • https://sadavixiji.weebly.com/uploads/1/3/5/3/135333995/2b2974d7bd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fabonek.rf.gd/xisezesaxuzabulivojog.pdfIn PDF document text
    • http://funazowo.rf.gd/english_cursive_writing_practice_sheets.pdfIn PDF document text
    • http://wazuvolixevafo.rf.gd/fundamental_ethical_principles.pdfIn PDF document text
    • http://luzutajezilako.rf.gd/85366548421.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_off0000d228.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD228 5080 bytes
SHA-256: 9db7b2f5219fcaa407706132467d08cd1a39269772706f1ff171a3d9649657b8
font_01_sfnt_off0000e366.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE366 10600 bytes
SHA-256: 61f615aa3976d337c34f9e80783e43c3c497c415136a116b2a4ae4fb6b42a1c7