Malicious PDF — malware analysis report

Static analysis result for SHA-256 45bb347278344bf3…

MALICIOUS

PDF

77.2 KB Created: 2021-04-27 22:26:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 15de3f539c731e4a95790e4c29f58ab7 SHA-1: 5ce7176becdc0511d6c4ec4089b12622c47a15da SHA-256: 45bb347278344bf3c6f04312237ff4fa546fc71826361a873c9434e1c7c82cb8
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 0.9993

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://ponafet.ru/strik?utm_term=best+suppressor+for+remington+700+308 PDF link annotation
    • http://zenafek.iblogger.org/19007688623.pdfIn PDF document text
    • http://optalpha.com/feviwerutokazocdd70.pdfIn PDF document text
    • https://betijefozivur.weebly.com/uploads/1/3/0/7/130776077/pulerijizezozi.pdfIn PDF document text
    • https://lirikilufowu.weebly.com/uploads/1/3/1/0/131070293/7230971.pdfIn PDF document text
    • http://oneitshop.pro/462338994979q5d7.pdfIn PDF document text
    • http://fastcreditreport.info/lowemimadaranosinonup5m5j.pdfIn PDF document text
    • http://picply.ru/60372843332wxhht.pdfIn PDF document text
    • http://tukameduk.22web.org/55289627276.pdfIn PDF document text
    • http://zixivudu.getenjoyment.net/bode_diagramm_vorlage.pdfIn PDF document text
    • http://nunobuzipame.medianewsonline.com/luxakowu.pdfIn PDF document text
    • http://mezeferatitora.scienceontheweb.net/vodisilabogogogiputes.pdfIn PDF document text
    • http://natiral.space/greetings_atividades_2_anobsc7a.pdfIn PDF document text
    • https://magapevalapa.weebly.com/uploads/1/3/0/8/130874167/rimapaz-dabuke-joxosukupuk.pdfIn PDF document text
    • http://nelilovodik.scienceontheweb.net/what_are_the_roles_in_scrum_team.pdfIn PDF document text
    • http://kupivse.xyz/how_to_play_multiplayer_on_surgeon_simulator_ps4r2xrd.pdfIn PDF document text
    • http://tuzogat.sportsontheweb.net/jon_rogawski_calculus_third_edition_solutions.pdfIn PDF document text
    • https://rogujodur.weebly.com/uploads/1/3/4/8/134899240/1329002.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4443dc9-13fe-435d-b344-7a28a86fc4ca/72321332859.pdfIn PDF document text
    • http://vasozebuxez.rf.gd/plc_programming_courses_nz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6dd7f841-6fc1-41df-8962-3ebc20aa9491/what_degree_do_you_need_to_be_an_operations_manager.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4cdf859e-01d2-4522-9ea4-f960dd80e13f/lochinvar_combi_boiler_recall.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/392544b9-afdc-45aa-822a-4758e242a029/61218396158.pdfIn PDF document text
    • http://sozofini.epizy.com/wasagufediwu.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_off0000eea0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEA0 5608 bytes
SHA-256: fba99d9c98e0e6be2b7458d1e1e05b5d63259a009c9afa65380e003aabe1c842
font_01_sfnt_off000101b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101B1 11136 bytes
SHA-256: 72a40d5c08fa08c1ed3b40547e46e3e0ad707f404536d99f3a12a92a4bdc8993

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