Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fb2264b0e20811f…

MALICIOUS

PDF

86.2 KB Created: 2021-06-26 13:25:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5ba5eb11c028b7b6500a3a4256c9158b SHA-1: ded8bcd00732acbc20d7390bf6d2a554809abecc SHA-256: 2fb2264b0e20811f66c63ed69918f3a7878ddfb9a537253b6f133fb2db8d486d
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of numerous embedded URLs pointing to PDF files suggests a phishing or malware distribution campaign. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of an attempt to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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 http://sciencevier.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fdce4e494d---mevijiban.pdf
    • http://dishandspoonproductions.com/ckfinder/userfiles/files/20705472531.pdf
    • http://technoculture.cz/admin/upload/file/sujosomafaro.pdf
    • https://tlproduct.com/userfiles/file/18272756269.pdf
    • http://aftckwt.com/uploads/file/42183494198.pdf
    • https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af8b81b008d---51109650496.pdf
    • https://spaslask.pl/wp-content/plugins/super-forms/uploads/php/files/53npamk4fpo515ik3040p584kq/zojojep.pdf
    • http://cementfeet.com/userfiles/file/60468169683.pdf
    • https://www.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16086eddf983ce---vubasasafofile.pdf
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606d64b596a5e---puluzufemekow.pdf
    • https://cruiseship.cruises/wp-content/plugins/super-forms/uploads/php/files/9ri2d0qsph3pr4qo5p9kn6uldv/82886486194.pdf
    • https://gpuhub.net/wp-content/plugins/super-forms/uploads/php/files/8koidr6lrbe8trcb73nquuu71s/26987217020.pdf
    • https://bringem.de/wp-content/plugins/super-forms/uploads/php/files/ef56c650ed55038c2688fa2a4bb7a28b/73102986306.pdf
    • https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/78rg51o01dc37nr7qlcb043uq0/81329438609.pdf
    • http://nuovojob.com/userfiles/files/80875962318.pdf
    • https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/160940b50b004f---duviku.pdf
    • https://www.alpha-dynamics.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1606d030851b8b---611874549.pdf
    • https://www.servicioscalibrados.com/wp-content/plugins/super-forms/uploads/php/files/21181ba832dd5b0db9704fa7eb776e9e/jawolasujukimaxiv.pdf
    • https://advantagelic.com/singhania/downloads/file/moxurasodixumuduludi.pdf
    • https://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/8950fd4c536776457f6fa1b216ecf6f8/bugegixodasoz.pdf
    • https://genesislighting.net/wp-content/plugins/super-forms/uploads/php/files/16241f0a2680739b0057c90fdfa12fa0/92737977840.pdf
    • https://criteriacambio.com.br/wp-content/plugins/super-forms/uploads/php/files/qpgktqroiir2ttmm0q903g05kf/95339985937.pdf
    • https://samavetpharm.com/userfiles/files/41538718124.pdf
    • http://www.circoloaletrium.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b9b9d33ccd6---venelowajoku.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=hebrew+day+of+atonement
    • 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_off0000ef19.bin
2c71b24716d10cef441ef4d2110f94a43db20b02f9b41eb99a961748b85240d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF19 10540 bytes
font_01_sfnt_off00010721.bin
686e0db228ecf71cf93b987388aaa1afdc4896feff9d8c65ead07c3deeab68b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10721 16436 bytes
font_02_sfnt_off000131c7.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x131C7 16792 bytes

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