Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b38ecd4e24a9064…

MALICIOUS

PDF

65.2 KB Created: 2021-01-01 12:34:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: e48f14d15d9f3662efa5b21fe24d64ed SHA-1: a5b1531b509732943063436615d73b9efebb305e SHA-256: 7b38ecd4e24a9064461087a2d1f108a1f65cd642f9c0337bf02431f0fc171ca4
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://traffset.ru/123?utm_term=what+is+the+purpose+of+the+declaration+of+independence+as+stated+in+the+introductory+paragraph PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4420760/normal_5fac3ffa39dde.pdfIn PDF document text
    • https://mijibetifud.weebly.com/uploads/1/3/4/6/134653630/2c80dd260.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491936/normal_5fd7cef66e64b.pdfIn PDF document text
    • https://dagakaxogofawi.weebly.com/uploads/1/3/4/6/134699425/vevugafogame.pdfIn PDF document text
    • https://vogafixam.weebly.com/uploads/1/3/4/3/134310040/xifubidogu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366339/normal_5f87b0cc8742e.pdfIn PDF document text
    • https://fipamowusaki.weebly.com/uploads/1/3/4/8/134879766/jojuragadizedin.pdfIn PDF document text
    • https://pubategikosiw.weebly.com/uploads/1/3/4/1/134131453/mizurimime.pdfIn PDF document text
    • https://maxazokal.weebly.com/uploads/1/3/1/6/131606281/lugepi.pdfIn PDF document text
    • https://toripifisesu.weebly.com/uploads/1/3/4/3/134367164/banuweterobum-jaxolomatanu.pdfIn PDF document text
    • https://tevirilozarenov.weebly.com/uploads/1/3/2/6/132695732/eec055b706e.pdfIn PDF document text
    • https://bakubirusi.weebly.com/uploads/1/3/4/6/134680497/kojiv.pdfIn PDF document text
    • https://bumobuzeki.weebly.com/uploads/1/3/4/4/134477779/f10699.pdfIn PDF document text
    • https://bizumoku.weebly.com/uploads/1/3/2/6/132681494/rinefejatabezexa.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/jiwisigetizoxif/holiday_budget_planner_template_excel.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_off0000c2b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2B8 5532 bytes
SHA-256: 00d15318bc32dd4f6b4e48a37482c6a4e83ed9e188f9053475f98ee8500f5cbc
font_01_sfnt_off0000d598.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD598 9672 bytes
SHA-256: 69c478fa1aa759707a168eff8cf3ae727c7d8a687c59950a487313e5e95c41e0

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