Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3e4abe3645f87f8…

MALICIOUS

PDF

81.0 KB Created: 2021-03-02 13:28:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: f734b93d99220fdcb2bbf1b2aa5af87d SHA-1: 9fa843fd360e47f5f73b420e7009c051982da1e2 SHA-256: f3e4abe3645f87f8de5ee13440726297f6380e05bdc2dd7ced62d1c8dc06f9c0
96 Risk Score

Malware Insights

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

The PDF document contains embedded URLs, one of which, 'https://xezojetit.ru/123?utm_term=bose+acoustimass+10+home+theater+speaker+system+manual', is flagged as malicious and appears to be a 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 PDF structure and embedded URIs suggest it's designed to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://xezojetit.ru/123?utm_term=bose+acoustimass+10+home+theater+speaker+system+manual PDF link annotation
    • http://jurojegame.getenjoyment.net/roomba_scheduler_4230.pdfIn PDF document text
    • http://sitebomobegux.sportsontheweb.net/84946761708.pdfIn PDF document text
    • http://mobeditobaxul.scienceontheweb.net/2007_ford_explorer_repair_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/bipadifudame/cifOAie/87468559792.pdfIn PDF document text
    • http://nufapivevavenak.22web.org/vovurik.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/liluvad/gesep.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/nelesebezalotok.pdfIn PDF document text
    • https://s3.amazonaws.com/vokeri/shankar_dj_songs_naa_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/vinejivunitego/20635568041.pdfIn PDF document text
    • https://s3.amazonaws.com/sudevejerifu/34093683730.pdfIn PDF document text
    • http://gosaduzunake.myartsonline.com/how_can_i_check_my_check_engine_light_code_without_a_scanner.pdfIn PDF document text
    • http://jaxojuru.rf.gd/41748737538.pdfIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/chime_contact_information.pdfIn PDF document text
    • http://rizoweriwofa.epizy.com/how_to_get_the_soap_to_work_on_a_pressure_washer.pdfIn PDF document text
    • https://s3.amazonaws.com/panokojol/64107646458.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_off0000fefd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEFD 5584 bytes
SHA-256: 8242f974b10894951a05fcd36d6120982d5cf6c51ab0bdad5fc66e2594f8f2bf
font_01_sfnt_off000111da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111DA 10676 bytes
SHA-256: 1effdcf499c987bf45f6a32ef137e94a21a2533ae523b9ef456220a2b626a868

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