Malicious PDF — malware analysis report

Static analysis result for SHA-256 506f2883f022a004…

MALICIOUS

PDF

75.2 KB Created: 2021-05-20 07:22:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1033d4da9acaede36e882ecf554aa10b SHA-1: a0d2acb95b9a38d8b1fbecacf59785836448d4fa SHA-256: 506f2883f022a0044a0c85837f095cf907865897a98a25dc99f613fbc688ea78
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document that contains embedded URLs, one of which points to another PDF file hosted on a potentially compromised website. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to downloading content, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://xn--78-6kce7dfhb9dwb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/616e23f8aece61fe92ea778bcb801aa2/59793009454.pdf
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a284a97dcb9---69014361047.pdf
    • https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/nbg7dm1uqibsk6ilrt6bt34han/gadilakawupam.pdf
    • https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/f8fe7fc7d95eb7891d52b9eba55bf420/bigisi.pdf
    • http://webscape.co.bw/wp-content/plugins/formcraft/file-upload/server/content/files/160714d8a09b56---14499973425.pdf
    • https://joepromenshealth.com/wp-content/plugins/super-forms/uploads/php/files/43c8caa50a5d42a860c9ccc4caa4f94c/79089063802.pdf
    • http://itaindustrial.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a28c22d5461---pafofululonodabipamaxed.pdf
    • http://archi1919.com/smlclub-files/file/59491344831.pdf
    • http://alkanboya.com/files/file/%5C/43598721696.pdf
    • https://him-home.ru/wp-content/plugins/super-forms/uploads/php/files/a9d6588ef18f2a1d94e19207ab382482/70110254589.pdf
    • http://sieckultury.pl/wp-content/plugins/super-forms/uploads/php/files/74366f4e866bc051f42911bd3fa1012c/lejorubasizabezubi.pdf
    • https://almoheetmanpower.com/public_html/userfiles/file/73140561232.pdf
    • http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607597e860f20---30043708855.pdf
    • https://www.straightmyteeth.com/wp-content/plugins/super-forms/uploads/php/files/009889bea89c118276599d9f2c775083/95476395904.pdf
    • https://baxsporthorses.com/userfiles/file/31206945443.pdf
    • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160788c1eb35dd---totuzapadagajoxomo.pdf
    • https://dedywiredja.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608428d434777---fofulaxen.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=spartacus+season+2+download+in+hindi+480p
    • 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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e43d.bin
f278688f695c65d86b8f0ee425495a086670893ed01a59a3ff1e0bcdf328978e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE43D 5912 bytes
font_01_sfnt_off0000f86b.bin
a2a2e09538839721d06e0ad3fdb2a6fcd5e26029fb22cf05b51bb6db750e4ff1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF86B 11484 bytes

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