Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a1e66ed1294a46b…

MALICIOUS

PDF

70.4 KB Created: 2021-02-16 00:42:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 13027f4ce6de846b2390a49a8d3163ae SHA-1: 954376e2f6e163f9db4010093fb45b4dcd157e89 SHA-256: 3a1e66ed1294a46b6795fac72d08a88601e4023cb2cf48cf93e9d5d383c3caf7
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/wb?keyword=download%20td%20jakes%20book%20soar%20pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4420612/normal_5ffff0d7d7f5e.pdfIn PDF document text
    • https://cdn.sqhk.co/pixukinoma/bhi6gfD/white_background_remover_png.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422377/normal_5fea11c417373.pdfIn PDF document text
    • https://fufiwixafuwisu.weebly.com/uploads/1/3/4/7/134770326/e647fe7d9544.pdfIn PDF document text
    • https://fisudobu.weebly.com/uploads/1/3/0/8/130813554/8694881.pdfIn PDF document text
    • https://cdn.sqhk.co/borefigux/dxggFgg/pocket_world_3d_treasure_pavilion_trick.pdfIn PDF document text
    • https://cdn.sqhk.co/vagewovupug/hg7Bfgd/converter_ico_svg.pdfIn PDF document text
    • https://waboralitenir.weebly.com/uploads/1/3/4/5/134504299/kilogunajaxox-nividolidubewog-lowut.pdfIn PDF document text
    • https://xolojafiwonizup.weebly.com/uploads/1/3/5/9/135966724/8b42fe9503a7b.pdfIn PDF document text
    • https://cdn.sqhk.co/gulanuwe/doSuhij/movie_maker_software_for_windows_7.pdfIn PDF document text
    • https://barobinamad.weebly.com/uploads/1/3/4/7/134756413/fixejug.pdfIn PDF document text
    • https://cdn.sqhk.co/mikedeto/clLgeKI/85162530808.pdfIn PDF document text
    • https://cdn.sqhk.co/vugomupuzisa/hUihjcS/85023606260.pdfIn PDF document text
    • https://zexivavu.weebly.com/uploads/1/3/4/8/134872555/penosotudofapavojeju.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sakamajuxuga.epizy.com/pinevadekijofosemo.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_off0000d6e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6E2 5404 bytes
SHA-256: c831eb29af5f51786fba60e75adaf0fd81b032559f9debad835491f0e3930ce6
font_01_sfnt_off0000e964.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE964 10468 bytes
SHA-256: f77543b453f8e07269ee89f6961fca728b14b2abd6fd0630f101bc9f38c15f78