Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc5094f955fa189c…

MALICIOUS

PDF

71.9 KB Created: 2021-02-28 03:20:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d3927273150814258bd6177f1ef2f17b SHA-1: c0f0cdad5a53f7c60999e522c654ee533fa02241 SHA-256: dc5094f955fa189c02ef40df16ab5a9830d18727ccbc896dd0cc576c771902f0
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://leonvi.ru/award?keyword=memory+jogger+2+continuous+improvement PDF link annotation
    • http://retamos.mygamesonline.org/65240475008.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393034/normal_6031f203c6f46.pdfIn PDF document text
    • https://cdn.sqhk.co/wemitupu/diapqgc/a_titan_s_tale_bless_unleashed.pdfIn PDF document text
    • https://gifoxulexup.weebly.com/uploads/1/3/4/8/134865115/14e1091a.pdfIn PDF document text
    • https://famemizi.weebly.com/uploads/1/3/6/0/136006686/46a686f58d075.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480383/normal_5fe0d63c6a54b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383802/normal_600d7086e2822.pdfIn PDF document text
    • https://cdn.sqhk.co/sizafutito/kiheFVh/feluwasedida.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454813/normal_602588092d66d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471691/normal_5ff7610b154f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465133/normal_6038d0114e6a2.pdfIn PDF document text
    • http://gagitevanonuti.mywebcommunity.org/vujarex.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385026/normal_6037b94f34331.pdfIn PDF document text
    • http://pozijuza.scienceontheweb.net/buvakinu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404290/normal_5ffb56e5c3fc5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d2f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2F7 5388 bytes
SHA-256: 161c118794e37d1b00af0b158dbb728497536729ac9c013684e624db79d69fe4
font_01_sfnt_off0000e563.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE563 14692 bytes
SHA-256: 953aeaccf62ad37cffd3c3a59412e411b35c7fb19056b898135900561f26597f