Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cdfd2333da6953c…

MALICIOUS

PDF

77.3 KB Created: 2021-07-14 01:54:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 37d328fcd57e4c35178d9e13ec78f2c3 SHA-1: 7c05b8f198bbb2f3f6e5c62eab466c9305253ab5 SHA-256: 0cdfd2333da6953cf2ea4eb1b391c36a34c56d6372710b64bab63f939ce849dd
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The ClamAV heuristic identified this PDF as a phishing trojan. While no executable scripts were extracted, the presence of embedded URLs suggests a potential for directing users to malicious content or phishing sites. The document body is heavily obfuscated and unreadable, preventing a more specific analysis of its lure.

Machine Learning

  • Nyx PDF Classifier clean score 0.2210

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/sq/ugae/~3/um1bUVUAM38/square?utm_term=middle+finger+and+thumb+touching+meaning
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec86af59713006cbe1d6e0/1626113711325/st_martins_cathedral.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60edd7d9e83f616bcf81f838/1626200026146/fizakamofetunefuter.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_off0000cd9f.bin
dee87987d4b1ab231457b4f7694bdd87acf532d80e9017af53623f8f2765d4b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD9F 10988 bytes
font_01_sfnt_off0000e6a2.bin
d561f51f082a41dad431abfd63eeb1ddd7c7410931de19abd92d7ed0dc5b950a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE6A2 16500 bytes
font_02_sfnt_off00011196.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11196 16792 bytes

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