Malicious PDF — malware analysis report

Static analysis result for SHA-256 4aadab878ac02bc1…

MALICIOUS

PDF

68.6 KB Created: 2021-03-29 21:55:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: f798fc78c3bd1d32bca7fc0150566860 SHA-1: a981a404f184f3f073d8b6f6f3fa97bbd09bc934 SHA-256: 4aadab878ac02bc1bcf6ee4b5f71443a7a23aff7661f8b2b94d5c3a1a57c7031
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable hosting or link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically highlights the nature of the links as a deceptive tactic.

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/award?keyword=amazing+love+chords+in+g+pdf PDF link annotation
    • http://mediaverifiedbadge.com/4839344289g0qwv.pdfIn PDF document text
    • https://cdn.sqhk.co/fupokiwil/ThhlRQs/87409320346.pdfIn PDF document text
    • http://shop-kid-toys.online/frommers_parisf3s3s.pdfIn PDF document text
    • http://diwokaxojizo.iblogger.org/graphic_design_book_cover_template.pdfIn PDF document text
    • https://cdn.sqhk.co/xaxovowupofa/jargjjb/deeeep._io_beta_animals.pdfIn PDF document text
    • http://zirigifoxusol.22web.org/barefoot_gen_book.pdfIn PDF document text
    • http://butalinonoruma.scienceontheweb.net/wisixilujene.pdfIn PDF document text
    • https://cdn.sqhk.co/wufotubi/TDhhK52/abcmouse_games_that_i_can_play.pdfIn PDF document text
    • http://rubeatyshop.xyz/300029227453hoii.pdfIn PDF document text
    • http://gnoogle.site/wing_chun_kung_fu_the_wooden_dummyrquwf.pdfIn PDF document text
    • http://ejinaya.com/call_of_zone_modghuol.pdfIn PDF document text
    • https://cdn.sqhk.co/pazaxefuma/gjiMUja/zombie_fires_2020.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/3a45b389-21f9-4f86-ad48-08bbbf4ab234/broan_range_hood_buttons_not_working.pdfIn PDF document text
    • http://zumebixakefeta.epizy.com/48083242751.pdfIn PDF document text
    • http://vimozav.epizy.com/xivalusukipalumo.pdfIn PDF document text
    • http://duxepivol.myartsonline.com/xorosipojomebinot.pdfIn PDF document text
    • http://jizuvopanusin.rf.gd/water_cycle_diagram_to_label.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efc99347-7ebf-45a7-aea4-7a5196c9597b/lanopelewulunorezamaxix.pdfIn PDF document text
    • http://kugefosames.rf.gd/51673996252.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c210.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC210 5376 bytes
SHA-256: 836b48d0c233fa3f40264a143d1c0448d28eb5710670b6e31017f8aba6044702
font_01_sfnt_off0000d426.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD426 9740 bytes
SHA-256: 4127679c0e99861108fd958dbb4234aaf9d8ae54844cee808edcb1cd13375637
font_02_sfnt_off0000f584.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF584 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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