Malicious PDF — malware analysis report

Static analysis result for SHA-256 facabdb6e03209af…

MALICIOUS

PDF

93.4 KB Created: 2021-04-01 15:03:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: d5699117bbd8813e07e4f582f0d8d6c7 SHA-1: 52dd2eac33a8a9cf9d837a2a69e02c16ecd91740 SHA-256: facabdb6e03209af27e903c7d63ee0e4f730bc414f31d137975302988c20ef93
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • 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 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://resalured.ru/award?keyword=creative+writing+planning+template+pdf PDF link annotation
    • http://fruitslope.online/30187442731sf8b8.pdfIn PDF document text
    • https://cdn.sqhk.co/reriwoduriju/Zsnuhjm/38767321894.pdfIn PDF document text
    • http://subfamjtii.site/arabic_language_bookssjvzl.pdfIn PDF document text
    • http://mihetos.xyz/9928853411736or3.pdfIn PDF document text
    • https://cdn.sqhk.co/temegolu/pfhih95/38109193101.pdfIn PDF document text
    • http://copyrighytsupport.com/3820147525374jgq.pdfIn PDF document text
    • http://ostanni.fun/why_does_my_4_wheeler_battery_keep_dying2146i.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462339/normal_5ffa8b08a56b0.pdfIn PDF document text
    • http://vittorguxx.site/zexejudetupudologogannu164.pdfIn PDF document text
    • http://reawolt.online/mega_jump_apk_mod9ip7p.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369762/normal_6054368c69ae3.pdfIn PDF document text
    • https://cdn.sqhk.co/golemejexeno/ichb4jc/15403466974.pdfIn PDF document text
    • http://ecosbor.net/automatic_car_parking_system_project_filescfls5.pdfIn PDF document text
    • http://latuha.com/does_costco_refill_epson_ink_cartridgesemz12.pdfIn PDF document text
    • http://noverst.xyz/pet_stores_near_me_that_sell_fish15204.pdfIn PDF document text
    • http://datingsexchat.site/13192798636kc0p.pdfIn PDF document text
    • http://chebsvet.ru/excel_guitar_tablature_templatevbv9z.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://5e54824a-8208-41b0-8aeb-7c017e8cfb46.filesusr.com/ugd/f64db8_795c910095ee4ec8b96005824d0d5b91.pdf?index=trueIn PDF document text
    • https://f1ddcea9-c323-452c-a4d3-aaefec61e50a.filesusr.com/ugd/defd8a_5a18db04ca114573982d9911a83db7eb.pdf?index=trueIn PDF document text
    • https://e966359d-176b-477a-9ad9-c314bea94227.filesusr.com/ugd/fa6f14_f7acdbc64a5f422f88405e803e897f6b.pdf?index=trueIn PDF document text
    • https://8c805f22-5240-4a8e-9b4d-8499607ff1fc.filesusr.com/ugd/76156b_9cdc0d57c92a45bf96f50b3f43d13da1.pdf?index=trueIn 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

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011fc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FC7 5036 bytes
SHA-256: a72fa424056485b61ce64dce10746c40ba7501017ee01a5ed28bef6a579981d3
font_01_sfnt_off000130e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130E3 11448 bytes
SHA-256: 5ffaba0a5cc8bdc42db626772c7e06c7c4d615bdafd2e5963a8e2c0876570fad
font_02_sfnt_off000157da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x157DA 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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