Malicious PDF — malware analysis report

Static analysis result for SHA-256 c02b90b04b7fae2e…

MALICIOUS

PDF

76.8 KB Created: 2021-07-13 06:03:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 38bb3eeb84c674de71dabaf9cdbb572d SHA-1: f2f68c8947c637226bce686e6ac27cab054d468b SHA-256: c02b90b04b7fae2e98e976c89d7de802ec1ce96c1eff6a3571da260b3a29d31a
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with a 'Pdf.Phishing.Trojan' signature. It contains an embedded URL pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The PDF structure also indicates potential manipulation, with duplicate object bodies.

Machine Learning

  • Nyx PDF Classifier clean score 0.1325

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://nomylo.ru/square?utm_term=pop+smoke+ft+young+thug+paranoia+mp3+download
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e9118a025aa46e30d22829/1625887114523/sosix.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e82d2b8592fe3a5894f005/1625828652099/how_to_put_capes_on_in_minecraft_pe.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b38a.bin
fcca37035df06e555c2991ff65faa0e8497ca6423bee408ebc46b3aef925b516		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB38A 16144 bytes
font_01_sfnt_off0000c905.bin
2fb2c31ca14775da76219688606fa6eefdc9aced6214b56562a42d0c4945f0cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC905 16288 bytes
font_02_sfnt_off0000f3a6.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3A6 16792 bytes
font_03_sfnt_off00010bbd.bin
e714244111264d9789ac125a7902b13bb2ed25cfa160ecc6f1d3e89c5e0e3a1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10BBD 11508 bytes

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