Malicious PDF — malware analysis report

Static analysis result for SHA-256 c01e60e6641ba8d4…

MALICIOUS

PDF

92.3 KB Created: 2021-04-02 03:02:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: d464f68a23c7bda15f810abbd3ead467 SHA-1: 13d38752749b7476cf8b423bfa5eef755c2909cd SHA-256: c01e60e6641ba8d486236d374f25e218ee61b227cc08c99434744cdafb6fddf2
186 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO manipulation tactic. One of the embedded URLs, 'https://xezojetit.ru/award?keyword=nasa+aeroponics+pdf', indicates a potential lure to a phishing or malware distribution site.

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://xezojetit.ru/award?keyword=nasa+aeroponics+pdf PDF link annotation
    • https://vivenovexo.weebly.com/uploads/1/3/4/6/134695888/bepegu.pdfIn PDF document text
    • https://zemizipip.weebly.com/uploads/1/3/4/0/134098502/2879684.pdfIn PDF document text
    • https://vigekajabaka.weebly.com/uploads/1/3/4/7/134708837/patotaludima_buxubejo_varulalosox.pdfIn PDF document text
    • https://timakopazasiri.weebly.com/uploads/1/3/4/4/134445807/6137084.pdfIn PDF document text
    • https://cdn.sqhk.co/tetaxekumipi/IhglYyy/woodworkers_guild_of_america.pdfIn PDF document text
    • https://cdn.sqhk.co/duditizonut/hjfjggi/brochure_templates_online.pdfIn PDF document text
    • https://cdn.sqhk.co/nopawuwam/NKsPdid/hair_fashion_1_mattapan.pdfIn PDF document text
    • http://rivabitipo.22web.org/15813010856.pdfIn PDF document text
    • http://riwuvodobopexu.mywebcommunity.org/84419757514.pdfIn PDF document text
    • http://kizunawinim.getenjoyment.net/mcq_on_cardiovascular_system_physiology.pdfIn PDF document text
    • https://cdn.sqhk.co/gebemiwisero/hee6ehc/67266145384.pdfIn PDF document text
    • https://judavolegarar.weebly.com/uploads/1/3/1/8/131871921/507ece81a345f.pdfIn PDF document text
    • https://gorenusedom.weebly.com/uploads/1/3/5/3/135326887/tixow-wesuwinaxo-zimebadivavo-muwofipiwelijut.pdfIn PDF document text
    • http://lunagogafoxoj.sportsontheweb.net/fajimubadevogigasuxupoj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fijinibegomiba.rf.gd/differentiate_alpha_helix_and_beta_sheet.pdfIn PDF document text
    • http://rulamiji.onlinewebshop.net/bulixejoserivubuno.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/why_didnt_they_make_the_lost_symbol_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/nepozanovikimi.pdfIn PDF document text
    • http://mojofukiw.epizy.com/how_to_round_up_calculator.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_off00012d97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D97 5084 bytes
SHA-256: a28a957f877617cd01ffdd24a32ae91b6c0fd8357285d724596b8082ce36513b
font_01_sfnt_off00013ef6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13EF6 10904 bytes
SHA-256: f9b3cae189789b30276e57b952833d8fbb2dbf5fa9ee3b46833f0d705d101210

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