Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0debe7479e4f018…

MALICIOUS

PDF

69.1 KB Created: 2021-02-16 19:18:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 8e58c7b4a0f1814f3738b2cba6fa2195 SHA-1: 367526688e1d362f3b992f36e50fde06cba7d675 SHA-256: d0debe7479e4f0189814ab589c2e9e7dd144e802e0c63e654aa758d7c91b4b15
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://bologen.ru/123?utm_term=toyota+camry+hybrid+battery+cost PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4450721/normal_5fe3a59c157d2.pdfIn PDF document text
    • https://jesisime.weebly.com/uploads/1/3/4/8/134886507/8067087.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377407/normal_6015bd8da8ce2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448347/normal_5fd3817dca374.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377936/normal_5ffd45b77b034.pdfIn PDF document text
    • https://letotanuvimipe.weebly.com/uploads/1/3/4/5/134598603/rekewux.pdfIn PDF document text
    • https://wifusudufasebo.weebly.com/uploads/1/3/5/9/135992472/9473390.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380413/normal_6010c9a460d9d.pdfIn PDF document text
    • http://tasuzafu.22web.org/88188843600.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377938/normal_5fe764cf3f7bd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488339/normal_5ff1402fd9a20.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368478/normal_5fef168c6cf5e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468871/normal_5fec9be9d763c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476011/normal_600b5053109c2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://safadixuzet.rf.gd/kixesaxujotanedab.pdfIn PDF document text
    • http://nuzavaxevarap.epizy.com/40611445472.pdfIn PDF document text
    • http://fixadamobus.epizy.com/70189815229.pdfIn PDF document text
    • http://lenawevurokolup.epizy.com/bekegaj.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_off0000d0e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0E9 5336 bytes
SHA-256: 678dfcecccec6456d67133e50c30a9cd1285b346ceda691b8f845e51fac774b7
font_01_sfnt_off0000e2e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E7 10672 bytes
SHA-256: 73f7e63f27f3a74250fe0632ab3ecfabdf252a8e0926c8fe776e6efecb3dcb9c

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