Malicious PDF — malware analysis report

Static analysis result for SHA-256 24506150aa27c19f…

MALICIOUS

PDF

70.4 KB Created: 2021-05-09 22:27:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64ce913c09932b54ecd0b4dd3401b1ab SHA-1: 282bb5a6919d5645511d24f05c24351ad8322272 SHA-256: 24506150aa27c19f48f3d2f784cd4dc118c0999922dc2ec1485cfc8df251d688
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains an external URI pointing to a URL that is likely part of a phishing campaign, attempting to trick users into downloading a malicious file. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://coretry.ru/uplcv?utm_term=cambridge+academic+english+c1+advanced+pdf
    • http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607e5cac4a06e---fazikezuvigaravagulin.pdf
    • https://moma-restaurant.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ec1118e64e---71904189704.pdf
    • http://www.gaviprintpack.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079bb838a1ee---80463497438.pdf
    • http://files.ibiza-ferien.de/file/18630089030.pdf
    • http://www.ambredore.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f372df17c4---rusobiwamodozofaj.pdf
    • https://www.kbstephens.com/wp-content/plugins/super-forms/uploads/php/files/28a9f45420a9cdb9b7715090fdfc6b69/rubozusozov.pdf
    • https://orldoc.ch/wp-content/plugins/super-forms/uploads/php/files/d1ddippudar4l9n66jj59r6jm4/78235409656.pdf
    • https://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160983281e0f1f---zuvokoronakaw.pdf
    • https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/c8rdg7rclh83p7vkqddeps9iec/nupogosilupiz.pdf
    • https://sharidendesignasphalt.com/wp-content/plugins/super-forms/uploads/php/files/65b902589e56faad3f5086d5cbb3d7ab/51686118789.pdf
    • http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160910f0ac3764---lepatigokibofubano.pdf
    • http://www.recetasyconsejos.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072fe13dbac8---27016385540.pdf
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608b9143ec499---venezemizudimadop.pdf
    • https://nowackleverkusen.de/wp-content/plugins/formcraft/file-upload/server/content/files/16082dbe79c2ab---84132733657.pdf
    • http://www.saraviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098192d10ee0---48076711554.pdf
    • http://comicpapyrus.com/wp-content/plugins/super-forms/uploads/php/files/399f857e3d54a968da038e6061a7436d/48725742908.pdf
    • https://www.nrlandscapes.co.uk/wp-content/plugins/super-forms/uploads/php/files/ab9c73ad3def291f30fb84fb4bdfcd57/13277365304.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d04c.bin
cd9dbcbfc930d840dcdc084ea9084fb9504431149d6a8fc7bdcb04a15319074f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD04C 5724 bytes
font_01_sfnt_off0000e3a0.bin
b525b5d7d6f9b85b41d1c5fd35cc53783b4e8452667a80e4bbe6866d25a6ffb4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE3A0 13496 bytes

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