Malicious PDF — malware analysis report

Static analysis result for SHA-256 92be4f1f7970e1da…

MALICIOUS

PDF

78.0 KB Created: 2021-07-12 21:26:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f213da0ac663f0e77dae36d711c45e1c SHA-1: 7a9de79f93ef43162f6b2bdb80a86036008be2f1 SHA-256: 92be4f1f7970e1dae3bde17091df1a03b1b29daf3fc91855dbf768542abb8fe6
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains embedded URLs that likely lead to malicious content, although the specific URLs extracted were classified as benign. The document's structure and embedded objects suggest it is designed to exploit PDF vulnerabilities or trick users into navigating to external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9001

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/W5vEtEh6t-A/square?utm_term=how+to+select+and+copy+text+from+pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ec7b250cf33f708d798940/1626110757971/perforated_stercoral_ulcer.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec7d612de985067772d4bd/1626111329488/52432280546.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec78944027437375955957/1626110100783/gujjubhai_the_great_full_movie_download_480p.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e7affffdc75e32ab053b36/1625796607920/betefitarixatam.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e8fd585fa2eb14b90a3417/1625881945067/767935801.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_off0000d0d6.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD0D6 16792 bytes
font_01_sfnt_off0000e8ed.bin
48fcc68a2aeeb23cd1134fc0f057c3a7932f27822954711c79679ac261a13d95		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8ED 10980 bytes
font_02_sfnt_off0001027e.bin
1a1207444fcaebd404706d9fd41c3ab0e32d00ba3b5631f794b4e113acefbbe2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1027E 16096 bytes

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