Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2e08b0bcac6aa39…

MALICIOUS

PDF

81.6 KB Created: 2021-03-05 20:49:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: d6b9c424d1df8ef3c047209b267f1538 SHA-1: 888823c7e8f1a3a4129ca61d30463358f58dc3d3 SHA-256: e2e08b0bcac6aa39299261418b3fab8bad2282524073bebadaafdca341ef8a1a
126 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, likely as part of a phishing or scam campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though obfuscated, contains text related to search queries, suggesting a lure to a malicious link disguised as a search result.

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://xajibur.ru/strik?utm_term=what+were+the+primary+causes+of+the+french+revolution+brainly PDF link annotation
    • http://zakugajogaz.iblogger.org/why_is_aragorn_a_ranger.pdfIn PDF document text
    • https://cdn.sqhk.co/duvetezoje/Mijgc3y/fixato.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482027/normal_60254f1a98aed.pdfIn PDF document text
    • https://cdn.sqhk.co/levowexesu/3G1ieia/football_training_equipment_for_wide_receivers.pdfIn PDF document text
    • https://cdn.sqhk.co/xanodujijefu/fjiH7eX/heroes_strike_moba_4v4_battle_royale_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393644/normal_6027ab2ac9126.pdfIn PDF document text
    • https://cdn.sqhk.co/toxodimina/ghpKMqp/the_sims_freeplay_cheats_unlimited_money_ios.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://s3.amazonaws.com/telasebisu/imf_bentham_annual_report.pdfIn PDF document text
    • https://5849b288-062f-49f8-a71b-da420f1f00fd.filesusr.com/ugd/c068f8_1ad1388d3661431a82d85e14945530eb.pdf?index=trueIn PDF document text
    • http://wapinogure.epizy.com/conners_3_scoring_guidelines.pdfIn PDF document text
    • https://df6a9abb-74f3-47e1-b359-fe6d1019da36.filesusr.com/ugd/7921d2_03071af684cb4d81b8d6a53768f59282.pdf?index=trueIn PDF document text
    • http://wazuvit.rf.gd/gedoxozudijaxojezena.pdfIn PDF document text
    • http://fataragoreb.myartsonline.com/80322891977.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/50437797088.pdfIn PDF document text
    • http://ledufowi.myartsonline.com/que_es_un_lider_educativo.pdfIn PDF document text
    • https://51bf459c-6b46-41b0-863f-532cf8a77e0d.filesusr.com/ugd/2eedf1_46c1fede0fa94592b6310899cc809957.pdf?index=trueIn 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_off0000f263.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF263 5544 bytes
SHA-256: 7fd23f420e1df9e57b6b9b3c689a71e733002ee7e9606d67ae54a2bc06911937
font_01_sfnt_off00010538.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10538 11108 bytes
SHA-256: bffe90442a62e49b88822a7e52153e8a3d62a7817116a684b8c072044e3da4ee
font_02_sfnt_off00012b04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B04 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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