Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b29c7aa555fad5e…

MALICIOUS

PDF

75.1 KB Created: 2021-03-13 16:04:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 7843f64528cd765655fa94cc010052f4 SHA-1: 306f25d14459d805c0fb43059141b60b05a8adbc SHA-256: 8b29c7aa555fad5ebf847f8e198b2cdf1f33a0a95e4559669663a86f61733b2c
126 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, identified as a phishing or malware distribution lure. The ML classifier and ClamAV detection strongly indicate malicious intent. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic suggests the document is part of a link farm designed to host many links on disposable domains, further supporting a malicious purpose.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://soxebez.ru/wix?keyword=mitchell+truck+labor+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4447093/normal_603657d36945a.pdfIn PDF document text
    • http://dosijefa.mypressonline.com/34636376303.pdfIn PDF document text
    • http://cg-designer.xyz/62687528541f55uc.pdfIn PDF document text
    • http://podipotekoi.ru/garmin_s62_instructionsm39je.pdfIn PDF document text
    • http://saxobupazes.sportsontheweb.net/57295888032.pdfIn PDF document text
    • http://lumogodasekepi.mypressonline.com/46568038309.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444646/normal_5fd6de5a7eb42.pdfIn PDF document text
    • http://legalvictory.group/lejolisepetaxipuwobh83f7.pdfIn PDF document text
    • http://mainsale.pro/33367862179a6ari.pdfIn PDF document text
    • http://vukabuv.22web.org/fijatuboxogane.pdfIn PDF document text
    • http://submonster.xyz/dutavapudujapideyx4md.pdfIn PDF document text
    • http://xixosifa.22web.org/skill_vs_skills.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gozenabuzixi.onlinewebshop.net/tableau_training_classes_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/085b3160-f579-4dda-9437-aff72cf98a77/ethical_hacker_salary_in_us.pdfIn PDF document text
    • http://kufuravolej.rf.gd/kindergarten_worksheets_phonics_and_math_games.pdfIn PDF document text
    • http://sametil.epizy.com/ocarina_of_time_nintendo_guide.pdfIn PDF document text
    • http://namegudobilud.epizy.com/93095910348.pdfIn PDF document text
    • http://rojomiv.rf.gd/mentalism_tricks_books.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e10eccf9-b0fa-48c1-9bc9-1b42e371ac71/can_you_cook_cube_steak_in_a_pressure_cooker.pdfIn PDF document text
    • http://rigidafavubo.myartsonline.com/printable_daily_oral_language_worksheets_5th_grade.pdfIn PDF document text
    • http://ninamutarat.epizy.com/iferror_google_sheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4233039d-a79f-44e4-abd3-71f4153ea007/54052973531.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6b88d11-8f03-4267-af1f-41aa453c45d5/wopixeluwasam.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_off0000e9b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B2 5232 bytes
SHA-256: 497cefbd5a87329308510fac75937e25c804ecb0883a8ea6c5520de2b9cd16e6
font_01_sfnt_off0000fb80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB80 10452 bytes
SHA-256: 4614d6e0d6a3296464894cfd0de021bba71738357a68c215c90261c2425aa1e4

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