Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e9f6e4fb7a2ebad…

MALICIOUS

PDF

87.5 KB Created: 2021-05-18 16:52:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 94f7474576c19415958bb1c2439a83b4 SHA-1: 15f4982ed6166bef30f106996fbe8b76d6015d0a SHA-256: 3e9f6e4fb7a2ebad587b7300afd851ec54c4e2ad2aa9732a16ad53807dc3f950
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The presence of an external URI suggests an attempt to redirect the user to a compromised or 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://fokemale.ru/strik?utm_term=percy+jackson+and+the+lightning+thief+cast+marie+avgeropoulos PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4426279/normal_600db58535544.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467975/normal_603bdd5f6a2cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385633/normal_60310efd73f8c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406463/normal_6012719f8579d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448558/normal_602b7f45c9f09.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469633/normal_601f1f93ed5a4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ddb6934-5b3a-47c1-bc19-6134a8a6b818/jimegorekalamisulemubo.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/john_deere_z225_engine_for_sale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8264cf6-d72e-4149-b374-6b35b9ed4106/volapado.pdfIn PDF document text
    • https://s3.amazonaws.com/veraxawewib/vevixudiraxo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc475188-0cf1-4eb9-b297-5bf1337e9765/5790435197.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6d56721-74d4-4f53-bb5a-b095fc192eb7/why_excel_file_format_is_not_valid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee334a28-9bb9-4702-a8fa-dbce5a95ade7/monsterverse_godzilla_vs_kong.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0268de24-2148-4727-9c48-9f8e62b41896/what_words_describe_a_sunset.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/839c8f48-52d1-4efe-8479-3f5b084757d0/how_much_does_a_program_manager_make_at_google.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c28aab3-35f1-4527-9a88-db464969b65c/musical_notes_clip_art.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ffb5204-b0ca-4d38-a041-1a916cdeffb1/62047253651.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d82943d7-8c46-4a1e-8236-e7ee5f0af37f/healthrider_softstrider_treadmill_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee8a9dd8-39e7-491f-80c8-20404358d78d/1998_chevrolet_s10_owners_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd585a9c-294d-4e77-9702-2ef4e6fe738f/75295901132.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_off000113e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113E7 5872 bytes
SHA-256: bbaf4087a1822f189e2f06dd0c8213e14f241069d59fe4ed7bebfec88d4da3ce
font_01_sfnt_off000127d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127D0 11600 bytes
SHA-256: 3f5f2f14947d6f6bdd49b9d04da134d04871231f131f1054a19c0d9db6fb8bbb

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