Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a460cd5e2b79fc5…

MALICIOUS

PDF

207.0 KB Created: 2021-05-31 11:29:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 2454908158a24a554ff98408fbb00853 SHA-1: 77ff8f6f3e040133da55f4a4373a3e940bd2f508 SHA-256: 0a460cd5e2b79fc583ffdce88c8b3d5b120ddcd37a6a55846bbadc209c014670
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains text related to Ghana and its capitals, likely a lure to encourage interaction. The presence of numerous external URLs, including one pointing to a compromised WordPress upload, suggests the document is designed to redirect users to malicious content or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://irlanc.ru/uplcv?utm_term=mention+the+16+regions+in+ghana+and+their+capitals PDF link annotation
    • https://motelandratecuci.ro/userfiles/file/masebisogipofetefinusevup.pdfIn PDF document text
    • https://ottenburger.com/userfiles/file/12921657177.pdfIn PDF document text
    • http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/1606cd8ee5124c---13089744906.pdfIn PDF document text
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d186389c9f---74393611550.pdfIn PDF document text
    • https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0fc7d4f0c8---vunitaligulopekafumu.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160a8b97343670---96783770832.pdfIn PDF document text
    • http://all-pass.com/folder/editor/file/tamulipamewuxokizuwip.pdfIn PDF document text
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1608c488ba1745---rivobatugigadozeluxizijo.pdfIn PDF document text
    • https://west-holding.com/userfiles/file/70331295114.pdfIn PDF document text
    • https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac7a4723a2d---75614968137.pdfIn PDF document text
    • https://profbuhotchet.ru/wp-content/plugins/super-forms/uploads/php/files/d80467033517a68d132a50dc83290215/46377151513.pdfIn PDF document text
    • https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/8jtk8a6rth14dmfe7h9mmkaub2/66130804601.pdfIn PDF document text
    • http://svenstavik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160830d5fb940b---munimi.pdfIn PDF document text
    • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f2acd89557---77980832573.pdfIn PDF document text
    • https://forex-robo.org/wp-content/plugins/super-forms/uploads/php/files/fdd947e6e5fde3a1185abffd9127de42/rizuge.pdfIn PDF document text
    • https://advancedcheckcashadvance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aff9856b0a2---28009197479.pdfIn PDF document text
    • http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094d4fb00662---xavarudaxum.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002ec75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EC75 5544 bytes
SHA-256: 72e71b29f0486b4c2d1aaadd728d80071ab0dcf7dc18d4e3204965473bf9016b
font_01_sfnt_off0002ff5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FF5B 15300 bytes
SHA-256: 96dfe898c92e4f0e951c209f2aeeac4a842670b42305153f75a3faa2c2e2dc97

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