Malicious PDF — malware analysis report

Static analysis result for SHA-256 96d43c62f18bf3ae…

MALICIOUS

PDF

93.5 KB Created: 2021-01-03 03:02:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: d70bff7fc352c9ecd4643c9b799007d6 SHA-1: ee9d48f731e051017c27a294eab8021294e0abcf SHA-256: 96d43c62f18bf3ae36f10750ccd568840e5c00e1e0f2aed16579f502d318b991
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, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. The document body appears to be obfuscated or corrupted, but the presence of the external URI strongly suggests a phishing attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://trafffi.ru/123?utm_term=denki-gai+no+honya-san+umio PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367952/normal_5f99fc255069e.pdfIn PDF document text
    • https://cdn.sqhk.co/kenipafitu/iahaHhh/nulixotiwoj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386349/normal_5fcc945c2710b.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/gezejoputiwinu/18824763644.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a146d73-8546-47dd-9eec-e10a83e124dc/sivupewivumatobokolodojas.pdfIn PDF document text
    • https://s3.amazonaws.com/purawuma/vapiganobolefuporidazij.pdfIn PDF document text
    • https://s3.amazonaws.com/naxozelozude/answer_artinya_apa.pdfIn PDF document text
    • https://s3.amazonaws.com/geraromu/karle_baby_dance_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d719b1ad-bb4d-487f-97f4-1c14e52ac1a8/rarovebekividagilu.pdfIn PDF document text
    • https://s3.amazonaws.com/fadadedezeker/advance_directive_form_nj_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e75e4644-2c1f-41c5-b900-59b9115f8af8/battlefield_5_fps.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3BE 12268 bytes
SHA-256: 75b3179147247c07e47f13a59faa0c9ceec630f9ffad59293de94f0aaaf3c30a
font_01_sfnt_off00011be1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BE1 5168 bytes
SHA-256: 45a1b6f2177ea6c0ea1488fa01b9d41b7e34336ae4ee24a80422254400f60514
font_02_sfnt_off00012d71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D71 11364 bytes
SHA-256: 5b7022e26e22ee3c53e7bca00b7ac68559b8e3ed9a90069164aaede71a117ace
font_03_sfnt_off00015352.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15352 16164 bytes
SHA-256: 0ddbdf075a6b93c30840c956f82c28930afd570615945c5f10d387cf6e2c8926

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