Malicious PDF — malware analysis report

Static analysis result for SHA-256 04b34e440b4e63ae…

MALICIOUS

PDF

84.5 KB Created: 2021-03-29 20:01:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 06bd925239db927ee189617da9957abd SHA-1: 71769f4e9b50b68952cae2aeee63f9d31ecb7955 SHA-256: 04b34e440b4e63ae811da856678ef9a416ebce105c0fc9cef047c65207a87e2d
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 0.9998

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://bologen.ru/strik?utm_term=technical+recruiter+interview+questions+and+answers+for+experienced PDF link annotation
    • http://roxelejabojafe.scienceontheweb.net/merchant_of_venice_sparknotes_act_3.pdfIn PDF document text
    • https://cdn.sqhk.co/lukedivibeb/dBhdXJe/portal_mod_for_minecraft_1._16._3.pdfIn PDF document text
    • http://ruvenebigolusep.mywebcommunity.org/22734092691.pdfIn PDF document text
    • http://eurofamily.pro/fibutsi2w2.pdfIn PDF document text
    • http://zobotalemogi.sportsontheweb.net/2352492150.pdfIn PDF document text
    • http://xovebud.mygamesonline.org/43672607396.pdfIn PDF document text
    • http://re-prime.ru/76120735704a6db8.pdfIn PDF document text
    • https://cdn.sqhk.co/vilosezuj/jzhdjh4/maze_runner_books_good.pdfIn PDF document text
    • http://biggymstoe.com/symbolic_logic_examplesf8inn.pdfIn PDF document text
    • http://onesmall.space/didache_bible_ebook7bymt.pdfIn PDF document text
    • http://muzhskoizhurnal.ru/vazidiwofitarugogoxegileuycyl.pdfIn PDF document text
    • https://cdn.sqhk.co/pulovafafita/ficuWaH/toy_cars_for_toddlers_to_ride_in.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://493f174a-a540-412c-bacb-e5b7b26cbfcf.filesusr.com/ugd/95bb70_33f4d3c8f9574e57895f6d992f7fec15.pdf?index=trueIn PDF document text
    • https://cf62593c-3f62-494e-9ef9-3c2a63ead7d7.filesusr.com/ugd/93dae2_15bf65ac121c44a69df734e75db8b92a.pdf?index=trueIn PDF document text
    • http://rigidafavubo.myartsonline.com/36036413717.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9618e3a-c3fd-433d-8b65-2cd3311dda92/la_leccion_de_august_resumen_personajes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed4cfc6a-b2e2-4766-87b6-9627db47a0af/sans_20_critical_controls_for_effective_cyber_security_defence.pdfIn PDF document text
    • https://3ff4c494-4984-418a-b709-7a5c611cca0a.filesusr.com/ugd/adbee0_3d3c6d3ba91842d9a01d0b6db7e82270.pdf?index=trueIn PDF document text
    • http://zavulelobawabi.onlinewebshop.net/definition_of_accounting_information.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e63fabf-6d5e-41d3-884c-fad05476da1d/air_force_officer_ranks_and_pay_2019.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_off00010e3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E3B 5536 bytes
SHA-256: 60e630201bd2c17ff4b0a6e123c7c8be737fd05ea7983fb072f7fa1b316f137e
font_01_sfnt_off00012120.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12120 10732 bytes
SHA-256: b6fbeb71b9f73fc9d2c3ecfdb702d22fb5288aae6a7c7b8a7a03de31d7d88517

Open this report in the interactive analyzer, or submit your own file for analysis.