Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6a9d64f88d362fa…

MALICIOUS

PDF

77.5 KB Created: 2021-07-16 12:55:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 9f9958b48feccb95c53680c6a799026c SHA-1: abaef994677c1b9e65c1ba624b2f7fa4edf04469 SHA-256: e6a9d64f88d362fa4dcb121aa1380c0611264833629907ea5bd8ce5ae91a891e
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to 'https://philabc.ru/square?utm_term=olive+ridley+turtle', which is likely part of the phishing lure. No scripts were extracted, but the presence of an external URI in a malicious PDF suggests an attempt to redirect the user to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8957

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://philabc.ru/square?utm_term=olive+ridley+turtle
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ec7727c268f363b085828f/1626109735282/download_battle_of_warship_mod_unlocked_all_ship.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e92a865fa2eb14b90c1af4/1625893510398/23135605455.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ed8928c927da2a63fc158c/1626179880461/76422127600.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e94cdc5ebba154a8fdb95b/1625902300757/psychoanalysis_and_religion_erich_fromm.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ec77d2ad1bf7105ccaaac9/1626109906303/point_line_plane_examples.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d1a4.bin
afd23b10800aa541fb7ba94f6ee288c49c7dc6799e531da9514b042a74e862e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD1A4 9992 bytes
font_01_sfnt_off0000e7f8.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE7F8 16792 bytes
font_02_sfnt_off0001000a.bin
95cde0bac4ce8c62516fa739d0015cbeb6d3ef293c6c579e1c600680ae8882fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1000A 16380 bytes

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