Malicious PDF — malware analysis report

Static analysis result for SHA-256 efe4ba7d51ba3b87…

MALICIOUS

PDF

80.6 KB Created: 2021-01-28 13:22:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: f21f64c97c5f828cc2c735b55a44bc0a SHA-1: 7faafc5c2ae15b097081b4fa1bf87bb978a90a9a SHA-256: efe4ba7d51ba3b870f84a5e8d547b1cc26eca1f8949f83ca1063472eed5f070f
96 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for an external URI pointing to 'https://maypoin.ru/123?utm_term=ipl+live+match+streaming+app+for+android', suggesting a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of suspicious URLs and the overall detection profile point towards a phishing lure designed to redirect users to malicious content.

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://maypoin.ru/123?utm_term=ipl+live+match+streaming+app+for+android PDF link annotation
    • http://stickerrus.ru/xetezaderuxukiforuroxutizbklvw.pdfIn PDF document text
    • http://autocredit.moscow/96543252186in4b1.pdfIn PDF document text
    • http://islandlandscapesbb.com/zigzagoon_evolution_emeraldyeqkw.pdfIn PDF document text
    • http://gbo.guru/fexidinivuxedozovefodt1zi.pdfIn PDF document text
    • http://ridunculus.com/lusuvejisolunanuwomafditk.pdfIn PDF document text
    • http://maykistore.ru/photo_transfer_app_bitwise_review37bqk.pdfIn PDF document text
    • http://osthondroz.com/fallout_4_update_1._10czl8m.pdfIn PDF document text
    • http://hookup154.online/mamakijinumurodajejaragiswrksp.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/natewared/akshay_last_performance.pdfIn PDF document text
    • https://s3.amazonaws.com/gotitibekovi/lupus_nephritis_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/julaxel/45715220463.pdfIn PDF document text
    • https://s3.amazonaws.com/zisulamisozoto/canon_printer_scanner_driver_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jotogorurekuro/wurozopejozazu.pdfIn PDF document text
    • https://s3.amazonaws.com/tapelu/terraform_application_load_balancer_listener.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/apex_legends_mirage_guide_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/raduvoxa.pdfIn PDF document text
    • https://s3.amazonaws.com/libusamagowuvo/atlas_of_anatomy_anne_gilroy.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/81997106460.pdfIn PDF document text
    • https://s3.amazonaws.com/bisiku/zuzunanopuleko.pdfIn PDF document text
    • https://s3.amazonaws.com/loranoduzuja/deadpool_game_apkpure.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_off000100ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100EF 5568 bytes
SHA-256: e18f4b9e7012da515e0580dbf139ded9b34a186fd006af68ec41ea6eb4c5b08c
font_01_sfnt_off000113b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113B4 9764 bytes
SHA-256: 9c90e0674d33e24fbd51d6a0ccbe2be62149d7705febda91fac78071b862e83f

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