Malicious PDF — malware analysis report

Static analysis result for SHA-256 9189994d1397a16a…

MALICIOUS

PDF

77.2 KB Created: 2021-07-13 17:42:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 71b30713e0dc0d3ff43ccda34a995e0d SHA-1: be65bd482429e3ecceb45641756328a38107b01b SHA-256: 9189994d1397a16aaf76cd9f347fdbc55159ec1ab227be43734937bd9b6f97c7
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains embedded URLs that point to external resources, suggesting it may be used to redirect users to phishing sites or download further malicious content. The presence of PDF-specific heuristics further supports its classification as a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7149

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/gOBB6uaVNRA/square?utm_term=tower+of+hell+script+2020
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e7a1ba5c13cc4fede78240/1625792955107/65713727315.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e7cd82d0799e4214bfef28/1625804163059/7155511684.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ed91cebde79631d3414a41/1626182095191/16168546695.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_off0000c015.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC015 16792 bytes
font_01_sfnt_off0000d827.bin
304d93be9e243280ff867b903f9bdc151308b070457228dab201d289402d5267		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD827 21860 bytes
font_02_sfnt_off00010f3e.bin
1d33de3a942f5af75eb160dcaba6c41fc18eddff9040b2c0038ec2de65a21e31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F3E 10600 bytes

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