Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0d02b0e5febd634…

MALICIOUS

PDF

77.0 KB Created: 2021-03-26 18:34:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: c671ef6180a29d27d8375cd852a0813a SHA-1: bbad4763c44f17ca82db173f034bdf3fef54d909 SHA-256: b0d02b0e5febd63491a20ec5c0308ddf070329ad60bf9bec25e6264859fa27ea
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. Although no scripts were explicitly extracted, the PDF structure and the presence of external links suggest an attempt to trick the user into navigating to a potentially harmful resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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=what+are+the+five+survival+needs+of+the+human+body PDF link annotation
    • https://cdn.sqhk.co/pivugituxi/igifQxw/74300441355.pdfIn PDF document text
    • https://cdn.sqhk.co/gadujotev/bygqiaK/28301425727.pdfIn PDF document text
    • http://lesantyqas.online/best_cad_design_app_for_ipad_pro64uk0.pdfIn PDF document text
    • https://cdn.sqhk.co/mugejufunij/ijaPia7/dibuwuzuraxo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392650/normal_6020a2917ccdb.pdfIn PDF document text
    • http://lnstagram-copyright-confirms.com/moserudetedubexiv8l3tj.pdfIn PDF document text
    • http://indir-kazan.com/vadimipelapif7qvl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482191/normal_60406a1cbc3ea.pdfIn PDF document text
    • https://cdn.sqhk.co/maputaliki/4FgdACK/fruit_ninja_mod_apk_2._8._8.pdfIn PDF document text
    • https://cdn.sqhk.co/jowapezo/dja7XhC/car_racing_games_for_pc_free_download.pdfIn PDF document text
    • http://ersoil.fun/ghostscript_get_metadataj19ep.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461786/normal_60463336244cf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://e40da922-b0e4-44be-9878-2d4898ccab21.filesusr.com/ugd/3a38e0_10cd2931c22c4a0a9b58f3b6ada0af81.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/moduxanakuri/china_asset_management_industry_report.pdfIn PDF document text
    • https://89e5ed4a-33eb-42a6-b5f1-9fc07ea1e15b.filesusr.com/ugd/ff68bb_51462d7cac394989a98a5f2ae52c758c.pdf?index=trueIn PDF document text
    • https://ad177677-9664-42cd-9bf2-17a10eef6e1d.filesusr.com/ugd/f8915e_2831171c2e51486c889c1b4d3c6d9c84.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/widiku/64434405391.pdfIn PDF document text
    • https://s3.amazonaws.com/gopuze/hemoglobinuria_paroxistica_nocturna_tratamiento.pdfIn PDF document text
    • https://s3.amazonaws.com/divelikubapiwaj/academic_ielts_writing_task.pdfIn PDF document text
    • https://s3.amazonaws.com/wazagidonux/tintin_in_the_congo_blackkat.pdfIn PDF document text
    • https://s3.amazonaws.com/puretulenuza/41227977089.pdfIn PDF document text
    • https://e5720c39-3c1c-4a52-9be9-509675281b5a.filesusr.com/ugd/0010c8_bf6573fcdd734485b4babd0747260193.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tuzakifezara/32618733638.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_off0000ef23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF23 5460 bytes
SHA-256: f460015d7276db176fffbbd0d2179b3b6492bf707de446da24af7d6d31fa0747
font_01_sfnt_off0001019d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1019D 10716 bytes
SHA-256: 0c7e8b42fafd7fd636f859c66d5e495730b20911d8fa2988959d9ec7beab8945

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