Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba12328d3b6325f8…

MALICIOUS

PDF

78.4 KB Created: 2021-05-25 11:03:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0d6851ea4d54deaebd7af56733fed3fe SHA-1: 756c3cc9a600589b5365b9d8f09c226b531d19b4 SHA-256: ba12328d3b6325f852f59ee6d602c41bcd68639689a99d307df3eb5b2cce5538
116 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating the presence of external URIs and an IP address literal pointing to a PDF file. The document body, though heavily obfuscated, suggests a lure related to document templates. The embedded URLs and the IP literal are strong indicators of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://huntic.ru/uplcv?utm_term=word-plantillas-pauta+para+escribir+recto-din+a4+vertical
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/59d56c493730e26d5d7ad13ba68bc93d/gapukonojiz.pdf
    • http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086098f9b667---jodilusexebibarojazisuwob.pdf
    • http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/d5b1c617220b5e6bb9fccd40ce16a0b6/vejabikufuwowivozol.pdf
    • http://creativeindustries.ru/uploads/userfiles/file/52825963503.pdf
    • https://stcatherine.ac.ug/wp-content/plugins/formcraft/file-upload/server/content/files/1609c3e4169b67---62033395851.pdf
    • https://maspacientes.es/wp-content/plugins/super-forms/uploads/php/files/tmjc9ha6viohbd680paeqh3282/lebilo.pdf
    • https://forex-robo.org/wp-content/plugins/super-forms/uploads/php/files/1ab811c90bb59faf8d99d652e2a82b37/96636286887.pdf
    • http://macautemple.com/userfiles/file/varikixezojeserama.pdf
    • https://spazmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2402e41f79---jerutukoxa.pdf
    • https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/4a1mqbhq690bvm64mr3mg1598s/80528143627.pdf
    • https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/dbdeec8815775b3ae79c4855661e2fb9/27279731439.pdf
    • https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160ac9298cda8f---62928556580.pdf
    • https://rlvanstory.com/wp-content/plugins/super-forms/uploads/php/files/343266f3867f998a7984415dd6d86092/mugarosalivibomorer.pdf
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/160a7dcc9ba74c---junure.pdf
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a40b47099aa---32710312646.pdf
    • https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/tl9jqfc68j8o984mnlsdbs71i4/77443891878.pdf
    • http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/160743ffc8303a---52141662320.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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://scripts.sil.org/OFL
    • 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_off0000d976.bin
47dde91110ce8e991dd46d7faec00b9969f27a3a941ba342166f305447839823		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD976 5400 bytes
font_01_sfnt_off0000ebf8.bin
59394c3727f5a3749efed4eb954f73009fb1370a45b8d28c4c4d5df937c61756		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBF8 11400 bytes
font_02_sfnt_off00011182.bin
3a3e3920316e8cce0a513f8d7f4d1ce5cb0680ad0963a03a1dedf20804012876		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11182 16956 bytes

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