Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fa7e38f11c9a877…

MALICIOUS

PDF

85.1 KB Created: 2021-07-03 04:17:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d3a144ae2efe4fb6ba35aca73860850b SHA-1: 35df82ec01753366fcd17ff350c3f733f174a56f SHA-256: 6fa7e38f11c9a8777295010cc375129095878bdf565b20787e8d73e131362105
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by a machine learning classifier and ClamAV as malicious, indicating a phishing attempt. While no scripts were explicitly extracted, the presence of numerous embedded URLs, many pointing to potentially compromised websites or file hosting services, suggests the document is intended to lure users into downloading further malicious content or visiting phishing sites. The file's metadata indicates it was generated by wkhtmltopdf, a tool often abused for creating malicious PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16099b477d1197---83732506588.pdf
    • http://ajtoablakcentrum.com/_user/file/60999911114.pdf
    • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/a2ba32a82c58c31ad46cc16a9606a860/vitusaxewid.pdf
    • https://www.hospedeagora.com.br/wp-content/plugins/super-forms/uploads/php/files/1g3e05a0fbf7oui7thhb293vi2/mulenebeni.pdf
    • https://voicelux.ru/wp-content/plugins/super-forms/uploads/php/files/939aee3d551c0d89e62a8655af935f18/kudobipataw.pdf
    • http://vmkmsz.hu/userfiles/file/vivadigubevevagiso.pdf
    • https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/f5a438c0cbdc9e8a0ec0eb65ca6fe551/88573639773.pdf
    • http://www.atrium-tuiles.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa043150a24---rusawifagesolagamakuwipa.pdf
    • https://windsbs.biz/files/file/pilanus.pdf
    • https://arenda1s.ru/wp-content/plugins/super-forms/uploads/php/files/dfa63bd7ed1979c76d87cc68c7603d50/33643370006.pdf
    • https://www.webplease.it/wp-content/plugins/super-forms/uploads/php/files/jjj0934sc78ek5lt6vh9u1keu4/53674104257.pdf
    • http://files.ibiza-ferien.de/file/vuvexure.pdf
    • https://finances-canada.com/wp-content/plugins/super-forms/uploads/php/files/3606c53a013f29e928c487a1c37c6e23/vuwumeferemikivaja.pdf
    • http://www.telsercom.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad2eef14a6e---37619638992.pdf
    • https://stagerightstaging.com/wp-content/plugins/super-forms/uploads/php/files/d29198510a957feeab080fe8a69b3161/20551961031.pdf
    • https://www.alignerco.ca/wp-content/plugins/super-forms/uploads/php/files/dc7d795921cab10349789df10d859c0f/19353880912.pdf
    • http://stratford1980.com/clients/1/19/19838be1bbe5684469623718d5e25b5d/File/gulazafamazozifitox.pdf
    • https://powermailer.in/userfiles/file/nezewigevazaxanotez.pdf
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/7efdbdf480fc3ea0f1e5f70030672f7c/8713881240.pdf
    • https://serviceservice.eu/userfiles/file/69440587847.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=what+causes+a+car+to+sputter+and+idle+rough
    • 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_off0000eae9.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEAE9 16792 bytes
font_01_sfnt_off000102fb.bin
7cc2382b0d1d78e45c880fbaf22e0e37b3f7afa5efd8b7fcc7d21ef51ede2519		 pdf-font-stream PDF embedded font (sfnt) at offset 0x102FB 16768 bytes
font_02_sfnt_off00012e40.bin
9f7cf5c1c71d9f333d74172675e0a2642062156d00d78ffb270506244b0a2138		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12E40 10888 bytes

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