Malicious PDF — malware analysis report

Static analysis result for SHA-256 c351b7e480378f89…

MALICIOUS

PDF

69.5 KB Created: 2021-01-06 04:53:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 591d9a0771f76a521ea2c7923ebf6d39 SHA-1: 7fe0b2a753d3206861e10321b90e1fa7f038c727 SHA-256: c351b7e480378f89a5bc7b3f469c95eb6ccfb604cab3fb6de4cec24c80f220e8
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 URL pointing to a suspicious domain, likely intended to trick the user into downloading a malicious application. The ML classifier and ClamAV detection strongly indicate malicious intent. No scripts were extracted, but the presence of an external URI suggests a phishing or social engineering attack.

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://traffset.ru/aws?utm_term=driving+school+2018+game+apk PDF link annotation
    • https://cdn.sqhk.co/remowiwa/Fughj0F/58200143113.pdfIn PDF document text
    • https://cdn.sqhk.co/veleviziwew/Cjejcgj/6631111439.pdfIn PDF document text
    • https://cdn.sqhk.co/ratugetaj/Bb1aNjc/jabizomifibif.pdfIn PDF document text
    • https://cdn.sqhk.co/gesimefav/dKjbibv/drive_ahead_game_unblocked.pdfIn PDF document text
    • https://cdn.sqhk.co/vaminika/bgeyUih/uncertainties_in_interferometric_measurements_of_radius_of_curvature.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://uploads.strikinglycdn.com/files/6ab13856-3095-4c76-a45c-be319c6a8e35/nililanaxubatewitokunof.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/cisco_meraki_mr33_datasheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/555b7a7d-a839-4679-8fe2-cfe851f8d2e3/vawavopo.pdfIn PDF document text
    • https://s3.amazonaws.com/jutenojamega/expert_betting_tips_premium_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9171a2a-fce2-48cb-a134-ed970b38a62e/36784033663.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/73828664212.pdfIn PDF document text
    • https://s3.amazonaws.com/tevomenil/carrom_pool_mod_apk_android1._com.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06fa9722-0626-4b83-873d-f08b8da34d55/soldier_mp3_video.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5fddca1a-10c0-4b2d-a13f-d381d54b6da5/biburagofurarotepowan.pdfIn PDF document text
    • https://s3.amazonaws.com/datarofapakil/8033822053.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd29764b-6309-4847-95eb-878817a19730/kedure.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/niv_bible_java.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c336.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC336 5700 bytes
SHA-256: c2b488c4f4ff27c338ddeebb3c062adbe54e3519274ef02573848d22c55e0afd
font_01_sfnt_off0000d667.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD667 10720 bytes
SHA-256: 5ff6c76ffb195a393c1066e8f4300273e35dee20b36a253ba71470d409c83262
font_02_sfnt_off0000fade.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFADE 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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