Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f9db5950f460b49…

MALICIOUS

PDF

89.0 KB Created: 2021-07-18 09:25:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 85cc1d8f8564f6601be9913875ebaa67 SHA-1: 54f214eb84ef399ffd08f461c870f7cc97b25012 SHA-256: 6f9db5950f460b49e007ecde6a4bbe401b1355ec3b910a772d2340d69bc3f218
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as a phishing trojan by ClamAV and an ML classifier. It contains embedded URLs that likely lead to malicious content or further stages of an attack. The file's structure also indicates potential exploitation of PDF vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7837

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://feedproxy.google.com/~r/razvivatel/yapz/~3/-MXWpcYQ7kA/square?utm_term=git+stash+only+some+files
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e92127aa30721e65ef263d/1625891111554/45739292967.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e8f5afc14ff043cd5ae459/1625879983912/ronda_rousey_theme_song_mp3_download.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f333479ee5897bffa0c1fa/1626551111597/97991515068.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e9178e8fb24157da6fb662/1625888654751/39348338772.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e91a718915684aa53d0572/1625889393928/subalonixazaxetif.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ee2b457d49fb55d626364a/1626221381274/56061613715.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60edb5f1fe64123bb485b8d0/1626191345348/bexar_county_property_taxes_online.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_off0000e202.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE202 16792 bytes
font_01_sfnt_off0000fa19.bin
aa540d1419d83280075418d50cc010547a1129be402cbd7d42501b8e68c052f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA19 10532 bytes
font_02_sfnt_off000111f3.bin
7d15b2d6d265aaca51dda18faee70a1b8fa9d95ed54cb111fb0895789092f9ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x111F3 16312 bytes
font_03_sfnt_off000127fa.bin
9bd392d902f8a729d86ef8995ce66780e5030e098b0be54a3d73310e2bd821c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x127FA 17988 bytes

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