Malicious PDF — malware analysis report

Static analysis result for SHA-256 600290209ecfbd12…

MALICIOUS

PDF

71.9 KB Created: 2021-04-30 05:31:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6af25e4b9408bd6b77625614d3e27782 SHA-1: 2a75286c43a3ed1f2ff708cd94a7a4faa2f64552 SHA-256: 600290209ecfbd12ea86d6b8fa0be665c40d8e225fa93332a124a700e81b4edb
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs pointing to PDF files hosted on various domains, suggesting a phishing or credential harvesting campaign. The document body, though partially corrupted, indicates a lure related to an 'admission letter template'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://www.goldenlantern.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606cfa872c63f---maxizinapekexo.pdf
    • http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/160849acd019c5---xagemitem.pdf
    • https://www.bakirkoytemsilcisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082d0c7eb02b---tuvibikifafesexawofi.pdf
    • https://otelnamore.com/wp-content/plugins/super-forms/uploads/php/files/b810daf519fb5c45b5dabb4f1680bb23/56498366563.pdf
    • https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/c07e1f6d39f522818fe29b41848a3f55/71092503908.pdf
    • https://big-cash.de/wp-content/plugins/super-forms/uploads/php/files/q12is5sg5u8il1p6lhsjhroigf/4966193472.pdf
    • http://angelcabrera.com/FCKfiles/file/sofakozuvavawemarum.pdf
    • http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160793ae8173c4---bebugodabutaxokafil.pdf
    • http://iamsoldierfit.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079226a68311---53240892007.pdf
    • https://orkhaconstruction.com/wp-content/plugins/super-forms/uploads/php/files/0mnecnjit5n3bes9nlgsphp582/xivusitesenosunokikil.pdf
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160741980688c0---rojifitumixamapare.pdf
    • http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16074682bd3ecb---58555312073.pdf
    • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/71dc7750844fc4f1573565f259d40bac/moxomewoto.pdf
    • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16074709551911---92522890691.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=provisional+admission+letter+template
    • 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_off0000de4f.bin
012b121764ce8e843e4fdabd59529bc692bdf19a5dafff4eb6a3c6b32629dae6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE4F 5168 bytes
font_01_sfnt_off0000efd0.bin
8928eae9b0e59189d78f7ad0ba13359cb6fd516d7d96f51f6ec006be630ea624		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEFD0 10236 bytes

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