Malicious PDF — malware analysis report

Static analysis result for SHA-256 2026a972314bfa89…

MALICIOUS

PDF

94.0 KB Created: 2021-04-08 01:53:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c02d8e787b2e38274688f5ca4f5331a1 SHA-1: 91186facd20ccc4c79a3c33f8cff4cc78cf06378 SHA-256: 2026a972314bfa89de828cdb195dfe7a832b3b4b3a3314797b5f7af8b27271c7
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://mezovuduw.ru/strik?utm_term=way+of+the+superior+man+chapters PDF link annotation
    • https://cdn.sqhk.co/dasadogiso/dygfhce/518037487.pdfIn PDF document text
    • http://form-lnstagramverifiedbadges.com/levepubed8her.pdfIn PDF document text
    • http://nogeturafo.sportsontheweb.net/vakas.pdfIn PDF document text
    • https://cdn.sqhk.co/xafogatok/gfMgjgg/51384735986.pdfIn PDF document text
    • http://intereriia.com/wawonanegefadexebijodegoe1jt3.pdfIn PDF document text
    • https://cdn.sqhk.co/difixoruze/haieAQX/cara_daftar_mysejahtera_check_in.pdfIn PDF document text
    • https://cdn.sqhk.co/wirepoti/hegdQgf/natukubamuvagum.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386597/normal_60119fde1bbaa.pdfIn PDF document text
    • http://zabolojisag.getenjoyment.net/fundamentals_of_computer_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480884/normal_6056dcae9df1d.pdfIn PDF document text
    • http://zarabatyivat.ru/tipagosofejfmyeo.pdfIn PDF document text
    • https://cdn.sqhk.co/logulemuset/jBbhchb/best_graphic_design_software_for_chromebook.pdfIn PDF document text
    • http://paksorond.xyz/durukaredujo0bwc.pdfIn PDF document text
    • http://pornbustyvids.com/88934986177q00l8.pdfIn PDF document text
    • http://shoppingyxplus.xyz/vovizigotefis90wzw.pdfIn PDF document text
    • http://mxbur.fun/ms_excel_advanced_test_questions_and_answersx6hdp.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://uploads.strikinglycdn.com/files/b3e019e3-8c49-468c-a845-3c6347992404/rikisupewaxogokowotedoki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f80972bc-bf59-4e83-8256-bc31902746df/nolelejewivew.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE85 6548 bytes
SHA-256: 4200db6c0e80cadcb5e6095e2db64c6b33cb2c0480475197fd4329a98774db8e
font_01_sfnt_off00010edb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EDB 5220 bytes
SHA-256: 2297a848366751367ea7cf119604885c2fc5af0abd6b408cb5b371d15d641a39
font_02_sfnt_off00012090.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12090 10708 bytes
SHA-256: cd7123bf096b50c92c8249b82aa4c11101e556edc383d461e7fec522fa407b0a
font_03_sfnt_off00014547.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14547 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd
font_04_sfnt_off00015a74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15A74 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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