Malicious PDF — malware analysis report

Static analysis result for SHA-256 464c4f5ef69dc711…

MALICIOUS

PDF

97.9 KB Created: 2020-11-20 02:45:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 64ec4e1666bf20b3db07a499a259454b SHA-1: 98c71892b34011d381f2c744ae3d390d1003ce53 SHA-256: 464c4f5ef69dc7119399589aa75adfa93b37564e909b2a0a32b9059bb265ba60
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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/strik?utm_term=longboard+deck+guide PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/87605e4f-7cce-41f1-b654-1a57a48ac1c9/domerixufodebu.pdfIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/21938810764.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7399c0ed-f4e5-4b1a-bb93-5146baef9db0/hp_14_elitebook_folio_9470m.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/634575d7-0e1b-4303-b25d-634fdba66dc9/jesabibakaworunomos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd8486de-71e7-4b9c-9144-f550510e342c/15509967794.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/tapuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f17cbc97-c175-4da4-b6c0-6679beccb623/sportcraft_pool_table_7ft.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/69934193754.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/ford_sync_3_android_auto_not_working.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_off000146f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x146F9 5040 bytes
SHA-256: 88b3a8b9f556c66ef69c3fc4886c7b7561a02eeb87691ba98d7481988ea16c78
font_01_sfnt_off00015835.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15835 10332 bytes
SHA-256: 2dcc31b310023e0ca7d09f1443f49c737486596d1511afcc6b9aec89e8a8b749

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