Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a5ceb82f41070ca…

MALICIOUS

PDF

75.7 KB Created: 2021-03-23 07:57:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: c613ab50eda8386ac916d8c0c7b16db3 SHA-1: d177b84af4c45bebbb4d8a69663f543a0e162216 SHA-256: 9a5ceb82f41070ca5fc05f2f4a88a8b46f025454e141a72a1f27867612a2d4b8
126 Risk Score

Malware Insights

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

The PDF contains multiple external links, with one specifically mentioning 'capital one breach settlement claim form', suggesting a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the presence of numerous URLs and the heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' point towards a campaign distributing malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/123?utm_term=capital+one+breach+settlement+claim+form PDF link annotation
    • http://jewlgems.com/81981885835lgugo.pdfIn PDF document text
    • http://blankid.ru/94531695033oq4fq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378390/normal_5fcd6de7b7327.pdfIn PDF document text
    • http://uspeh.icu/fonabosevubixokunatiza0ese1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379987/normal_601f72f98c531.pdfIn PDF document text
    • http://kizunawinim.getenjoyment.net/zuvelamefimobuvisa.pdfIn PDF document text
    • http://grizhoff.ru/nawexirinitixedeluropaximo2gqg.pdfIn PDF document text
    • http://kajipim.mypressonline.com/gujarati_bible_old_testament.pdfIn PDF document text
    • http://spiritstudio.ru/what_is_phonological_processingypr6f.pdfIn PDF document text
    • http://hamlikjorettoop.ru/globe_rewards_apk_old_version6vj77.pdfIn PDF document text
    • http://karnaval.host/canon_inkjet_ip100_manualenaft.pdfIn PDF document text
    • http://geniusenglish.space/xaridifig2afy.pdfIn PDF document text
    • http://magic-world.site/ice_hockey_game_toronto_schedules57b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459784/normal_600be8ab16269.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449009/normal_5fcb32bd20932.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500446/normal_6027f316b2a0e.pdfIn PDF document text
    • http://pmaider.com/xolifuzujavuxurija52u39.pdfIn PDF document text
    • http://hookup754.fun/how_to_program_rca_universal_remote_to_toshiba_tvk8xwv.pdfIn PDF document text
    • http://gebigulexejo.sportsontheweb.net/programa_arquitectonico_spa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gozuxinub.epizy.com/abs_plastic_sheet_1_4_thick.pdfIn PDF document text
    • http://niselasot.atwebpages.com/nefiwozid.pdfIn PDF document text
    • http://tofarogupa.rf.gd/jelomolalif.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_off0000eac6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC6 5300 bytes
SHA-256: 1c12fc11114dbbc9ac199da022b995332074ed6b266020c7845f2504e7b814f1
font_01_sfnt_off0000fc95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC95 10844 bytes
SHA-256: 2bd4f60407f0675edc9c2d6a5bf9968f0f0c2d69fb00422c63b75bde73a217e3

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