Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cb2d87bda2828fa…

MALICIOUS

PDF

86.2 KB Created: 2021-07-06 05:57:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 66972f7ee3c7d0c10cb381a6e8dcb8d9 SHA-1: 8b8f94282b8290a1e67200a4010fc3e512435407 SHA-256: 1cb2d87bda2828fae6011bc7b4ab8b0295441ad969756f7f3d8c26118ebae11c
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The presence of embedded URLs, such as https://queure.ru/uplcv?utm_term=who+whom+whose+meaning, suggests the document is designed to redirect users to malicious sites. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the overall evidence points to a phishing or malware distribution attempt.

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 https://queure.ru/uplcv?utm_term=who+whom+whose+meaning
    • https://ajwatravel.com/wheelmarine/userfiles/file/xaxobixepunonibu.pdf
    • http://www.buildingmalawi.com/images/uploaded/documents/fimukozuluwonokenibopug.pdf
    • https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/be26871babd980a7047feee7c078d33b/meromufufosidopaxerum.pdf
    • https://styliststudios.com/imagesTE/file/tuxugetazapum.pdf
    • https://f1com.ge/wp-content/plugins/super-forms/uploads/php/files/d1493af18d0de1d00de7b083ec6254da/fexeguvafulubulofoxilekip.pdf
    • http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16097870feb085---nexijukese.pdf
    • http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/160b7e439d1af9---2019338937.pdf
    • http://anadarkogomezfamily.com/clients/7/76/76920377ef4e0cfe2c6e77079a05cbd4/File/32698833595.pdf
    • https://peilimineko.com/userfiles/file/sozozegulexabevivogagaji.pdf
    • http://www.mezmat.ru/ckfinder/userfiles/files/tidunufepatazijigale.pdf
    • https://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/160703327da3a4---najakiriv.pdf
    • https://haps.company/wp-content/plugins/super-forms/uploads/php/files/jqe88ni134ap5fqbhgqmhi00m1/42883061527.pdf
    • http://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/bad31c945f22bf0ce42b1498e1beb426/41912444096.pdf
    • http://18554080.com/userfiles/file/velanajupudozebusamurojun.pdf
    • http://www.everhouse.lt/wp-content/plugins/formcraft/file-upload/server/content/files/160a70b72d7181---xumopefoxaxujojugeg.pdf
    • http://www.cheapmotorcycleinsurancepa.com/wp-content/plugins/super-forms/uploads/php/files/vm8950nohm6k6s94tkdd0jlpi4/zejobus.pdf
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d046bcec60b---vilor.pdf
    • https://www.sodigital.it/wp-content/plugins/formcraft/file-upload/server/content/files/16090505eeb5f9---mokimejifetebofa.pdf
    • http://jockmurray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d1c2d5e3988---kidirosaxizurinugugez.pdf
    • http://www.kidnuri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607394ec0bac8---34774176088.pdf
    • https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/503d3f0282ff1b8d7d5310e09a780720/fafukerusisodej.pdf
    • https://www.northwoodmedical.ca/wp-content/plugins/super-forms/uploads/php/files/d64qjcuesjg2ghqjqr84ichv98/53322096236.pdf
    • https://ski-valloire.com/ckfinder/userfiles/files/papirukezememudob.pdf
    • https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/92s19j0e1vcpioss7ne265dgnp/21268169175.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_off0000f1ef.bin
569671647823972ddb2d917425478bfc22d11bd9721c434115f7773e20284d7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF1EF 10388 bytes
font_01_sfnt_off00010955.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10955 16792 bytes
font_02_sfnt_off00012167.bin
474930f8c479b20310d8c63ff2ccd626d83b4a8e1cb48f0e94163da4d6271ede		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12167 16276 bytes

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