Malicious PDF — malware analysis report

Static analysis result for SHA-256 24459db9ffd7bfa8…

MALICIOUS

PDF

78.7 KB Created: 2021-07-14 01:50:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 6b51070d5ca3a67da335ef5033b8d99c SHA-1: 479b668beb4abb889bbc178533dc2ed77d7ca01e SHA-256: 24459db9ffd7bfa81f9ac49fa7ddf68f82f857b784b0e757b7b7800b82d6cdc3
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. The PDF contains obfuscated content and embedded URLs, suggesting it is designed to lure users into clicking malicious links or downloading further malware. No scripts were extracted, but the PDF structure itself is suspicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6586

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/~3/5VO7y1TeAqQ/square?utm_term=hyperdimension+neptunia+u+action+unleashed+trophy+guide
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e779fee51ab205da26104c/1625782782708/furnishing_a_new_home_cost.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ed9396af5561712127f736/1626182550745/juxilixutilevefibotoxuwot.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ee073a0229956bd138837a/1626212155002/kejunaxugokibitun.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_off0000ccb3.bin
fcb08b56c652915c6cbdf1b8020c24c2982ab45c6a70283e7d012ba52c483345		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCCB3 17716 bytes
font_01_sfnt_off0000fb05.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB05 16792 bytes
font_02_sfnt_off0001131c.bin
80ae93038f9dba9c32a8f1388e9394354bf3fb8d28e00bc60648faae3966dfa2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1131C 11168 bytes

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