Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad323e9d169dbde4…

MALICIOUS

PDF

78.5 KB Created: 2021-07-16 12:00:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 56efad6f9596288fcf601de0626f55d3 SHA-1: a141f8deef9222589f4aecba516eae51f01e35f0 SHA-256: ad323e9d169dbde4649f5e6bddc90f35084d1684a4ff1c717437306b06ccfe53
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URL, though labeled benign, points to a domain that could be used for phishing or distributing further malware. The file's structure and heuristics suggest it is designed to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8678

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/razvivatel/yapz/~3/7R6buoffwiA/square?utm_term=how+to+connect+to+laptop+with+lan+cable
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e94866c0906550d90c75a7/1625901158132/kobolerupuru.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60edca5bac614e13d12dc4ad/1626196571474/62895309422.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f0bb2974384d54fdf795c8/1626389290141/jolly_phonics_pupil_book_2_free_download.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e84f926cdf035000c454f0/1625837458569/95653386485.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ee4145b1f8b95648860456/1626227014058/44216626311.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e76dbe5b53b90d702a0833/1625779646129/69754347900.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec846fef188817f7e17cec/1626113135971/lelogagiget.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_off0000d3cf.bin
e4e39814058a022d884df82fce740ce6b8db63feeaefdaf6d62953d1a609a4d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD3CF 16468 bytes
font_01_sfnt_off0000fe98.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE98 16792 bytes
font_02_sfnt_off000116af.bin
24c97635c6ffaff9edf1f255e29a2831c38ce2af9161e14c5ec8b605f99b9a83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x116AF 10420 bytes

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