Malicious PDF — malware analysis report

Static analysis result for SHA-256 30bb36695d88e93a…

MALICIOUS

PDF

119.2 KB Created: 2021-07-16 08:58:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 1f5d8b108ab77ad61f012255b8b7b4a1 SHA-1: 9ea01f7079890bbcc576b6294479586cd1211eb2 SHA-256: 30bb36695d88e93a8e5b30f616db7913f022ae2ce9e174874851fe64c6cf0a7a
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The ClamAV heuristic identified this PDF as a phishing trojan. While no executable scripts were found, the presence of embedded URLs suggests an attempt to lure the user to malicious content or download a secondary payload. The file's metadata indicates it was generated by wkhtmltopdf, which can be abused to create malicious PDFs.

Machine Learning

  • Nyx PDF Classifier clean score 0.0402

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/J-SxIuB37Ms/square?utm_term=the+area+of+an+equilateral+triangle+is+numerically+equal+to+its+perimeter+find+its+perimeter+correct+to+2+decimal+places
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60f0cadb0dcda21ba0941cc2/1626393307449/dejukusunesoxe.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e8e452db8bb141bad637ab/1625875538731/timaduwowuzuk.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014945.bin
ecf430f342c5534c8e23f3200c3afc8c8b8ba90e98dd0679a3faa446e5304d3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14945 11016 bytes
font_01_sfnt_off00016cf8.bin
cb4dd0a26e0baf4a4659d73cacabc136904e994ae60b284fba7e175285024739		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16CF8 18232 bytes
font_02_sfnt_off00019c56.bin
fa16acc60085ad84fa311721b33655eacbb5b694181f52b9b7dfe7126f94588d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19C56 11508 bytes
font_03_sfnt_off0001b6f6.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B6F6 16792 bytes

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