Malicious PDF — malware analysis report

Static analysis result for SHA-256 98bef10877569d58…

MALICIOUS

PDF

77.0 KB Created: 2021-07-17 04:02:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e9c54db0704e04740902e408fe2dca7c SHA-1: e033d51eb7c873c4a727445f394475452259fc7a SHA-256: 98bef10877569d58b0a093b2798d02e9b16a2c4a470f8ad1a2a681c0f25ac027
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ML classifiers and ClamAV, with a specific detection name indicating phishing and trojan characteristics. The presence of an embedded URI pointing to a Google feedproxy URL, which in turn links to a Squarespace PDF, suggests a potential phishing lure. Although the document body is heavily obfuscated and unreadable, the heuristics and ClamAV detection strongly indicate a malicious intent, likely involving redirection to a phishing site or a further payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9260

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/IdU8rIDf9lQ/square?utm_term=saints+peter+and+paul+cemetery
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f0810ebe875f230108da9c/1626374414753/kiwofi.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f0917796f710445cd5f06e/1626378615508/25819413182.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60eca4bcb3b63f0898f513db/1626121404692/6_letter_word_that_starts_with_w.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e8589d62e77b6575d68aad/1625839773338/19191118023.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e7d87ff4d7c53d8b131bc9/1625806975590/vinezodaperatibevose.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60edf6a7ac614e13d132780d/1626207911426/rubojubofiwesotikop.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_off0000ca76.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCA76 16792 bytes
font_01_sfnt_off0000e288.bin
d04d0488e197bd7913114e560a272cbf27eb9ef41dea20a8e79783ad37649e2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE288 16908 bytes
font_02_sfnt_off00010ef4.bin
3b686a749f6358e2855ebf7698b506984942a44d84202c7d3435aef7fb0b9cfd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10EF4 10844 bytes

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