Malicious PDF — malware analysis report

Static analysis result for SHA-256 e40b61133645958d…

MALICIOUS

PDF

74.1 KB Created: 2021-03-15 17:13:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 82e6f49d907d0d44a49b29a1b0274f44 SHA-1: bb0c0e18d271d4023a6165842f82fbef7d9f5339 SHA-256: e40b61133645958d6a5c80c9df996d388818944522f1ea6c161b3b96174f30eb
126 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many of which point to disposable hosting and are likely used for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, suggests a lure related to 'myths and legends podcast transcript' to entice users to click on the malicious links.

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://mezovuduw.ru/wix?keyword=myths+and+legends+podcast+transcript PDF link annotation
    • http://biomaniix.website/66906163606y06hx.pdfIn PDF document text
    • http://niburufajanuto.sportsontheweb.net/6628879365.pdfIn PDF document text
    • https://cdn.sqhk.co/tipadasa/i9Fjb8Z/hard_platformer_games_unblocked.pdfIn PDF document text
    • http://lnstagramcentre.net/84592082009p13da.pdfIn PDF document text
    • https://cdn.sqhk.co/kominepoli/eGLgcwP/box_office_collection_2020_class_of_83.pdfIn PDF document text
    • https://cdn.sqhk.co/dirotiweze/hbjgQgg/kozezili.pdfIn PDF document text
    • http://good-production11.site/artikel_filsafat_pendidikan_islamg7fch.pdfIn PDF document text
    • http://italonewsero.site/reduregabill5d89.pdfIn PDF document text
    • http://fafikup.scienceontheweb.net/dofubob.pdfIn PDF document text
    • http://help-business-media.com/what_do_yellow_love_hearts_mean_on_snapchat5rpyb.pdfIn PDF document text
    • http://future-techno.ru/takafinomivejitefuy8gwm.pdfIn PDF document text
    • http://zuvels.xyz/67970956535nqswq.pdfIn PDF document text
    • http://sodaapp.pro/are_armitron_watches_expensive1yo4a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gusule/28091998157.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/19639411455.pdfIn PDF document text
    • https://s3.amazonaws.com/garorowa/rectangle_and_square_area_and_perimeter_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/adsoro_por_carvo_ativado.pdfIn PDF document text
    • https://s3.amazonaws.com/watajive/software_issue_log_template_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/satuja/remubufove.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_off0000e506.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE506 5444 bytes
SHA-256: 9d9377b1ad8f773421ef139851a224e6025d397f9b63be7f54947ab5fcb9b2a5
font_01_sfnt_off0000f794.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF794 10456 bytes
SHA-256: 6318997ca86e3852dcc22cdde07ac08f4f448c67360fb85edbed826295670d70

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