Malicious PDF — malware analysis report

Static analysis result for SHA-256 358c1644f9635990…

MALICIOUS

PDF

81.8 KB Created: 2021-06-26 07:56:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a6a92a918756bc099835c78ecf250ef3 SHA-1: 62bbd0c9cc747c8142d30de8d0672fee523782c0 SHA-256: 358c1644f9635990fb05ef1b284ed234510d656ce0863fffcd98de1ddb7cec31
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The ML classifier and ClamAV detection strongly indicate this PDF is malicious, likely a phishing attempt. The embedded URI points to a URL that likely hosts a malicious payload or phishing page. No scripts were extracted, but the presence of external URIs suggests an attempt to download or redirect the user to a secondary malicious resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://catamma.ru/uplcv?utm_term=psi+to+torr
    • http://creativeindustries.ru/uploads/userfiles/file/zivovakigetozoxofewe.pdf
    • http://iamsoldierfit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f45c89bbd9---zogeziki.pdf
    • http://vibrosystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609b4428191af---23815907217.pdf
    • http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0fea53a37a---sivujovelubofubinuk.pdf
    • https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/282hn3qoo7ur1ptplfqu48tmrd/83931445190.pdf
    • https://ebooksweb.net/files/file/60064895362.pdf
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3e6eedc4e4---rasorowa.pdf
    • http://amwordpress.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606d436333403---fewogu.pdf
    • http://retco.ge/ckfinder/userfiles/files/87238940221.pdf
    • https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1a2d74f49a---99866460915.pdf
    • http://asiavent.com/UserFiles/file///kafuleziwesikajafoje.pdf
    • http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c782c73eca4---44038536307.pdf
    • http://minuspk.ru/minuspk.ru/userfiles/file/91147301753.pdf
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/c0f348cfcf42b8618c8ffe978206606c/85321532590.pdf
    • http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/160b2d14292362---42162294191.pdf
    • http://aleeblog.com/wp-content/plugins/super-forms/uploads/php/files/31p879q14vi0gsgisd2e5q6da3/54952324446.pdf
    • https://clifestyle.net/uploades/userfiles/file/97035892404.pdf
    • http://www.melodypods.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081f80b8f103---xizebadi.pdf
    • https://www.deuba.info/wp-content/plugins/super-forms/uploads/php/files/khe2c6qec7920voejfashcav0r/97456124897.pdf
    • http://ecohort.com/userfiles/files/86093926214.pdf
    • https://bbensonmft.com/wp-content/plugins/super-forms/uploads/php/files/1f35486d5d0930e7442fcd057c2e1bd1/96376082259.pdf
    • https://forcechicago.com/wp-content/plugins/super-forms/uploads/php/files/3e5e658848cb4b05c690a49d80f122d7/lugavepotigulunekok.pdf
    • http://phillipwhiting.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080589f30110---53472240215.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_off0000e0dc.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE0DC 16792 bytes
font_01_sfnt_off0000f8ee.bin
45b6b28dd4a9baf58f35fec8235b9c7dc3fd185301079b258ac4c93fc5379c8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF8EE 17084 bytes
font_02_sfnt_off00012547.bin
767c9b2dda236f8314d979cfb3a41246a33b73feccc04d90741a6fff36b48fb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12547 9660 bytes

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