Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c80ae0563ad23fe…

MALICIOUS

PDF

77.4 KB Created: 2021-07-10 12:38:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 497f5f029c7509bdc8ce237f7a161cd0 SHA-1: 1b3c8ca198ef47a6f8d78019cfbdca9e27170bdf SHA-256: 7c80ae0563ad23fe7af122d12dc6c03c38250ba9cc0a5d6755f0b534e239071d
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. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The presence of multiple embedded URLs further supports this phishing or distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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=chinese+rmb+to+inr
    • http://anandtouristcorporation.com/uploads/99558082446.pdf
    • http://geologicatoscana.eu/userfiles/files/gawuxosiguxobivezudeb.pdf
    • http://makinsushi.com/uploads/files/tezewotozovitorinafam.pdf
    • http://gyobel.it/public/file/58657435110.pdf
    • https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab45d492ddd---25275322513.pdf
    • https://ivfnna.gr/wp-content/plugins/super-forms/uploads/php/files/6cee43326e8ed254aec5796f11889ab0/23104286387.pdf
    • https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/d575e9d908c1c05f80e81fa651d93d0e/tavugoda.pdf
    • https://limsurdua.com/contents//files/temek.pdf
    • http://stacjaregeneracja.pl/userfiles/file/wojina.pdf
    • http://maekuangudomthara.com/ckfinder/userfiles/files/70870393435.pdf
    • http://beloezoloto.ru/userfiles/file/26453833950.pdf
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/e4f9523a6bc54b07c9e209ea643f82ed/beboxejuf.pdf
    • http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b6adda77c9b---8671543138.pdf
    • http://agataklimowska.pl/userfiles/file/putagumasuzeboxen.pdf
    • http://afghansolar.com/userfiles/file/84366521566.pdf
    • https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/8mrmj6es91ea54f67rfe2llku1/76840393779.pdf
    • https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608703e689206---27480678977.pdf
    • https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e646dfabf8a---45935099646.pdf
    • http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab4c0db04cf---doxuwulodisunoxusawumepaw.pdf
    • http://seamacros.com/upload/file/74158102095.pdf
    • https://rjiminfra.com/wp-content/plugins/super-forms/uploads/php/files/7bf1c20d451be39dbcb8690c96414e2f/vujubipo.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_off0000cbc3.bin
c3a4ecfdae27b0404f9e47039f27fdb33cea52eb079a39f899311fd6352312cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCBC3 17228 bytes
font_01_sfnt_off0000f82e.bin
7d4add79cd0837935f8cbcffb2dc81f9e4a08687917eda6217a1db275264e2bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF82E 10336 bytes
font_02_sfnt_off00010f54.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F54 16792 bytes

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