Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa7983ed3e975fd7…

MALICIOUS

PDF

85.4 KB Created: 2021-07-20 10:06:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 0669891fb09a9265a4dcb8f03a2cc5f3 SHA-1: 4c7e8e17161825daa8cd0cc93a84d400634b494e SHA-256: aa7983ed3e975fd739cc608ff4ce76bcb8fdafee3227d6278161896bd436e024
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The presence of embedded URLs suggests a phishing attempt, likely directing users to malicious content or a download. While no scripts were explicitly extracted, the ML classifier and ClamAV detection strongly indicate malicious intent, possibly involving obfuscated JavaScript or exploit code.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9526

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/~3/4Ji06Fp1PxY/square?utm_term=ghost+living+in+a+ghost+town+lyrics
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e85354c7527c785cd34cd8/1625838421034/10298933484.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ecfd286ebf0d48ea8a1caf/1626144040118/59288015427.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e7e1c757d2352c927cad2c/1625809351277/can_you_eat_bread_on_keto.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec965bc32416487af12230/1626117723563/fukanagoj.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f40111a047b636122b5340/1626603793564/9891555705.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee6510aa539923b5890db7/1626236176781/vokesumepa.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f42241a9adb72803ae6b88/1626612289266/rozamowokugilazetoreni.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec83ba8bb04542cee49460/1626112955156/motuganojetosupugazujomu.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_off0000ea61.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA61 16792 bytes
font_01_sfnt_off00010273.bin
44c876772fa06ccdbcecd9dac7991693cd0c51a6acd7559df4365f0e1ed06dbb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10273 18476 bytes
font_02_sfnt_off0001317a.bin
6a191c67bd52c21aa2248803ea143a3fc228a160905508463808bfd8aa9cbaeb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1317A 10680 bytes

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