Malicious PDF — malware analysis report

Static analysis result for SHA-256 507be6a22fce3701…

MALICIOUS

PDF

90.8 KB Created: 2021-06-30 21:42:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 1b3f12ed995774c13541a65d31c914de SHA-1: a8d5324d8c12f6d0dcc8c4ee04b517aab8daa736 SHA-256: 507be6a22fce37013756e3bd441351f0c089b475ae5694cb2084221f73e6945f
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to a game download, aligning with common phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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://krisoc.ru/uplcv?utm_term=rope+hero+vice+town+free+download
    • https://churchofgodinjamaica.org/app/webroot/files/tifuberolewusajafugufe.pdf
    • http://dmscsmartlifeblog.com/userfiles/files/51694154841.pdf
    • https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608427d0877d8---fasak.pdf
    • http://nd-58.ru/wp-content/plugins/super-forms/uploads/php/files/ac37e6b49ebe0b0fa9c797b7669b9b94/24472666347.pdf
    • http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079d8fff3a1a---futaxi.pdf
    • http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072367e803ef---forib.pdf
    • http://securitydirect.it/wp-content/plugins/super-forms/uploads/php/files/cd4e52ec786effc0063de13cf2be2629/57446802145.pdf
    • http://labcoop-jsc.com/wp-content/plugins/super-forms/uploads/php/files/u8vq1hhh9leb2b68s3tpp129gs/tedadesotokotajexu.pdf
    • https://www.straightmyteeth.com/wp-content/plugins/super-forms/uploads/php/files/ab0ed00f459478772e880414026b88fc/ziwozumex.pdf
    • http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085e397183fa---wenag.pdf
    • https://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/160881dfb178ea---32765355178.pdf
    • https://inchiriereelicoptere.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160752aa5690e0---rerolaroxudugi.pdf
    • https://tocgia247.com/wp-content/plugins/super-forms/uploads/php/files/gugk7a5jgnns8o7tf1h11hu1he/26474050955.pdf
    • https://markeishahall.com/wp-content/plugins/super-forms/uploads/php/files/c019303d80cce98443913d9027dd4c1d/jerutazivuviwodepi.pdf
    • https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d6b31126404---tizoruzebibigitep.pdf
    • http://hoangnamjsc.com/upload/files/sadejavoni.pdf
    • https://mobile-translator.eu/app/webroot/media/files/11095532266.pdf
    • http://amy-tsai.com/images_express/userfiles/files/lewopex.pdf
    • http://kpdb.org/userfiles/files/zubabekanerulepikovez.pdf
    • http://www.rkcomdesignservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad8a1ab227f---761776933.pdf
    • http://pck.malopolska.pl/wp-content/plugins/super-forms/uploads/php/files/182ae3a2246fbc5a66fefc049d0714af/kaboravugenazapakomod.pdf
    • http://buffagiuseppeinfissi.com/userfiles/files/rajelobovejamasuzivozaz.pdf
    • https://kantankacreative.com/wp-content/plugins/super-forms/uploads/php/files/f8e48ab639ebf1a1885bfb659a86eb82/33565438471.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_off0000f223.bin
32872e0fa0dc144be8f921b2dd33fe45a9ef8a7adc8e7350a6f1e5a5bcb2afc3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF223 10748 bytes
font_01_sfnt_off00010ad6.bin
e768e04b2bebb70e5932206246e5b35092005fd78036ad10deb9aa4299bcde23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10AD6 27588 bytes
font_02_sfnt_off00014435.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14435 16792 bytes

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