Malicious PDF — malware analysis report

Static analysis result for SHA-256 fba7995b8b94878b…

MALICIOUS

PDF

75.7 KB Created: 2021-07-13 17:03:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: af7e1d77609eda08545773e1355a721d SHA-1: 71a9c20564fef116e47d4bfa92fe112df92e3003 SHA-256: fba7995b8b94878b3a63f0eaf7845703b5d97dcaaa55e29890a060ab07ca5f66
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL that mimics a legitimate resource, suggesting a phishing or social engineering lure. Although no scripts were directly extracted, the PDF structure and embedded URI are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7703

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://huntic.ru/square?utm_term=chesterfield+county+public+schools
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e8ef163ba7d954d543d576/1625878294512/puferakitalukodajawifesa.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e9589366be7e490f114f4e/1625905299574/this_guys_in_love_with_you_mare_full_movie_tagalog_2012_comedy.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec9de180388a1034d97607/1626119649720/46902476791.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_off0000c75d.bin
114e0a97c279caa3de3c037ebbfcf70e4e42f025031c5a69395e6bad87273637		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC75D 10940 bytes
font_01_sfnt_off0000e076.bin
d664a9db68d053a6321def066b09a1b3c1f58071d80c1842130d12b3e7426f6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE076 16408 bytes
font_02_sfnt_off00010b19.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B19 16792 bytes

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