Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f671b8ffb852146…

MALICIOUS

PDF

78.9 KB Created: 2021-03-19 11:05:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 30043121811280de9f129b4eed63c1f0 SHA-1: 7bfe9e094ab217017582db7d32e3b81991a0de23 SHA-256: 8f671b8ffb852146fee153dd3aaf14c89df9d1a21224f27874858a25882675a5
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains numerous embedded URLs, many pointing to disposable hosting, suggesting a link farm or phishing lure. The presence of external URIs and the ML classification strongly suggest this document is designed to redirect users to malicious sites, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jumiwimov.ru/wix?keyword=edge+of+empire+special+modifications+pdf PDF link annotation
    • http://rameautbxy.space/xatota6rins.pdfIn PDF document text
    • http://raisinshub.club/vilujukaj0jlw.pdfIn PDF document text
    • https://cdn.sqhk.co/zeragekub/hhgh4gj/58042465164.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvopone/dFjcicu/incident_investigation_report_template_south_africa.pdfIn PDF document text
    • http://nenotuwafuxigot.22web.org/25322451472.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzifixe/jahmhaB/weather_forecast_for_friday_night_into_saturday.pdfIn PDF document text
    • http://kogudajinisu.iblogger.org/95154937858.pdfIn PDF document text
    • http://idealica-italiaufficiale.site/faweseselen6r33u.pdfIn PDF document text
    • http://fadekitexef.iblogger.org/90426850258.pdfIn PDF document text
    • http://vizujoguva.iblogger.org/chicago_manual_of_style_citation_textbook.pdfIn PDF document text
    • http://iceteas.space/best_music_equalizer_software_for_windows_7ls2ze.pdfIn PDF document text
    • https://cdn.sqhk.co/tatogevi/dibhb7b/vowiti.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdfb6f36-dde2-4af5-b3b7-55ff39976061.filesusr.com/ugd/c6ac46_8b831efd8f254d1296eb85b070a93cb1.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca949795-1ab9-47bf-889e-5a61ffec57b3/wofafalikemobi.pdfIn PDF document text
    • https://03ca3561-abfe-48ca-9b59-b1b2b77f8126.filesusr.com/ugd/1af49e_300d552d60db43dea4a25231a55f9116.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/77692277-2f6e-464f-946c-7a76dc112230/how_much_do_navy_seal_team_6_get_paid.pdfIn PDF document text
    • http://gipomafusabakix.rf.gd/minoxufalixonovomob.pdfIn PDF document text
    • http://binutux.rf.gd/25209207053.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7a020a1-c00c-47c5-bd2b-bd00b80e29fd/titufodopikebi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c9d323e-3a49-4822-9b8f-0ba7348e09d9/venta_airwasher_maintenance.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/adfdbc1c-643f-47f4-a901-eb38f5205b2d/13936044356.pdfIn PDF document text
    • http://temadama.epizy.com/jenixokemanizerugegamopup.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3E2 5432 bytes
SHA-256: 68840bd93ec29943335c3849a2990587bf4838bb1d8241824456e03f9d06789c
font_01_sfnt_off00010651.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10651 11920 bytes
SHA-256: cbfd0e58aefb184e4fadb3d87ebd053d0b783784f982e5054c2b45475939cf5b

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