Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a905a44dfc28788…

MALICIOUS

PDF

88.7 KB Created: 2021-05-25 20:30:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0149997f5d3aa5985ed88c9371dfd633 SHA-1: 34dc7e2a3e41c84548b88f9bf23744e28b280fbf SHA-256: 8a905a44dfc28788f138a636300e3070a08ac4def8f9ebc9018b4e7f0009d55f
104 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, with a critical heuristic indicating it is a phishing or trojan. The document body contains urgency language, suggesting a lure to click on embedded URLs. The presence of external URIs and embedded URLs indicates the document is designed to redirect the user to malicious sites, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://pixomot.ru/uplcv?utm_term=hcg+injection+kits+amazon
    • http://richmediahouse.com/admin/uploads/file/mejotukokasuwepoza.pdf
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160760ef14a8dc---15797596201.pdf
    • https://neoville.ru/wp-content/plugins/super-forms/uploads/php/files/201379986b47c54483f718bcdb4da038/72586415435.pdf
    • http://midiabyz.com/wp-content/plugins/super-forms/uploads/php/files/9a46c0a37db7d03b5b0fb379ebce6e84/16772056127.pdf
    • http://adance0112.com/upfile/editor/file/81679965204.pdf
    • http://hydrem.ru/images/file/labuwojirebu.pdf
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160820d4b3a3dd---difegavofiraj.pdf
    • http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608dd704b0fc5---59063434699.pdf
    • https://www.ideaklinikkadikoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a5bf0291de---wesotapunoji.pdf
    • http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/160949ce8e9d86---11445282849.pdf
    • https://teenvolunteerhouston.org/wp-content/plugins/super-forms/uploads/php/files/f0796452c06e308c203817ee3f0d3032/vevozisegonamate.pdf
    • https://www.msolartop.cz/wp-content/plugins/formcraft/file-upload/server/content/files/1607b08aebd334---zuxezenutuje.pdf
    • http://adabaskimerkezi.com/upload/file/biwejudatesasupebojam.pdf
    • https://www.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16091f461aa68b---luzewedizapoporokoz.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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_off00011f43.bin
41f7d142bc51c4c05357092d665b1c5674f9cb384f83d481b890e19f4e2cfaa3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11F43 5144 bytes
font_01_sfnt_off000130c9.bin
633a16f69155a0b28aba40a9c880bffbed64c18978aef21c14bbfd18eb8548ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x130C9 10748 bytes

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