Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca3d1f4959ef9c32…

MALICIOUS

PDF

88.6 KB Created: 2021-06-30 17:03:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: fb01ea0ef84586eb40d0fbe7b08bc25c SHA-1: 54f78b21e2297c0dec6bfeff295da8aea2b5e0c0 SHA-256: ca3d1f4959ef9c325d5934033c3bbcccad446dbb86f0785d0e0e8e419a7e8779
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains embedded URLs that point to potentially malicious domains, suggesting a phishing or malware distribution campaign. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of an attempt to redirect the user to external, untrusted content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://goactive.hu/wp-content/plugins/super-forms/uploads/php/files/f0579b368e59e2c189d0d5af49a3e9c7/98257165858.pdf
    • https://interesttour.com/wp-content/plugins/super-forms/uploads/php/files/9160d4aa07b9928e6b51053f640b45d6/wibowef.pdf
    • http://nadiadsa.org/userfiles/file/22067926112.pdf
    • http://bouncebodysupplements.com/newerac2c/userfiles/file/talejozu.pdf
    • https://fatheragneliti.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d35bfdb8a27---rokobalexud.pdf
    • https://phoenixknights.co.uk/wp-content/plugins/super-forms/uploads/php/files/3c64fd7528a372123a1e61ef49d146c7/jofonulowupa.pdf
    • https://aradovan.com/userfiles/file/7191450182.pdf
    • https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a3438283d86---99153517609.pdf
    • http://cfh2.com/clients/d/d2/d2a7b52150a7a947468b52e9b7560e3c/File/22811800592.pdf
    • http://aelma.com/sites/default/userfiles/file/55585091749.pdf
    • http://kulturazebrak.cz/userfiles/rozapunomosinezojoduros.pdf
    • http://go-pxl.com/uploads/files/66023744741.pdf
    • https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a7a809af0bb---sedodofajodoturanomaz.pdf
    • http://meteosputnik.ru/userfiles/file/94148912484.pdf
    • http://flambotour.it/themes/userfiles//files/gujikazit.pdf
    • https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/upagfg6vk1ltd42m2cj1fs2rau/31275367689.pdf
    • http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091300e7455c---pojokagenijudifenu.pdf
    • http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/160a9dbf6afe21---15049832139.pdf
    • http://ellenia3.eu/userfiles/files/6517615267.pdf
    • http://pwr-tech.ru/userfiles/file/64591627882.pdf
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607198fe6dbfc---24360606282.pdf
    • https://alternativecarrepair.com/userfiles/file/vekedotewezafetuzosafo.pdf
    • https://fidelishospice.com/ckfinder/userfiles/files/98404360894.pdf
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/160d93986bc99d---62603710919.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=sims+3+how+to+get+a+girl
    • http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090c3ace8e8a---75386883660.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_off0000f6d6.bin
b2ad0c76dbf735a7836c87dbebf4cf1b5253554fd2b7477e67b3d088698956ac
pdf-font-stream PDF embedded font (sfnt) at offset 0xF6D6 10784 bytes
font_01_sfnt_off00010fc3.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x10FC3 16792 bytes
font_02_sfnt_off000127d5.bin
629c383cb35acc732fb65e57818959fe77cb715ac1467ec280d5ea8317c5a782
pdf-font-stream PDF embedded font (sfnt) at offset 0x127D5 17272 bytes