Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd9ca70a17e82b58…

MALICIOUS

PDF

85.9 KB Created: 2021-06-26 00:29:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: bc7c2d617b21e40dc48304e80881c735 SHA-1: cd015dbd2b6a3dab5b11b5bace90aa8184d83b2f SHA-256: bd9ca70a17e82b5881a8916d2c138613405db9f150cf2667784a404e5d690a6b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on compromised WordPress sites, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for distributing further malware or conducting phishing attacks. No scripts were extracted, but the presence of external URIs and the overall heuristic profile points to a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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://infrive.ru/uplcv?utm_term=the+death+and+life+of+american+cities+pdf PDF link annotation
    • https://beautifullifeuk.com/wp-content/plugins/super-forms/uploads/php/files/4938348f66b8974524a26703daa0b2e6/suroredizilabegakox.pdfIn PDF document text
    • http://daiichilogistics.com/uploads/news_file/90064682041.pdfIn PDF document text
    • http://www.peplex.it/wp-content/plugins/formcraft/file-upload/server/content/files/16071e182941a5---4622677583.pdfIn PDF document text
    • https://www.saltriot.com/wp-content/plugins/super-forms/uploads/php/files/ba8165715f5df0be65e54468e59f5182/makabufaxowu.pdfIn PDF document text
    • https://giustofiori.it/file/56268332173.pdfIn PDF document text
    • http://worldofpacifiers.com/editor_uploads/system/files/xakivivivanixel.pdfIn PDF document text
    • https://daluxerealty.com/wp-content/plugins/super-forms/uploads/php/files/ht1rukqel895g48k24eugm73n7/98111377689.pdfIn PDF document text
    • http://dirabrealtors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b12c89d13e1---wofuxafu.pdfIn PDF document text
    • https://rebates.forex/wp-content/plugins/super-forms/uploads/php/files/jaipbl7krin54dudiip9kd0r00/zinimojopozejatimiduke.pdfIn PDF document text
    • http://www.iso-clean.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1606d2d4b9fe20---ginonogavenutejuk.pdfIn PDF document text
    • http://hoangle.vn/uploads/userfiles/file/81514228683.pdfIn PDF document text
    • http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1608f13de4d9b6---42486324084.pdfIn PDF document text
    • http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2af6c61f46---nitipel.pdfIn PDF document text
    • http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cf8e0d517a4---29449039678.pdfIn PDF document text
    • https://thewaves.net/wp-content/plugins/super-forms/uploads/php/files/8pul1h14co992959r7rhvpm1vi/mijukerosi.pdfIn PDF document text
    • http://paradisoseminatrici.it/userfiles/files/10676824763.pdfIn PDF document text
    • http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f931d2a69f---26597423407.pdfIn PDF document text
    • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa0919727b8---kidasiza.pdfIn PDF document text
    • http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609b408b5399a---86562146208.pdfIn PDF document text
    • http://come2menorca.com/images/file/nutijavaren.pdfIn PDF document text
    • http://erbilsunhotel.com/wp-content/plugins/super-forms/uploads/php/files/ceeuhb7a8l477kfgfjcfu5i0e6/23661046528.pdfIn PDF document text
    • https://gamaconsultores.cl/upload/file/xegiresavoponumewizezos.pdfIn PDF document text
    • https://alshaabcoop.com/userfiles/file/28812575068.pdfIn PDF document text
    • http://bouncebodysupplements.com/newerac2c/userfiles/file/12915906825.pdfIn PDF document text
    • https://vresponse.net/userfiles/file/77691128282.pdfIn 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC5D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001046f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1046F 17256 bytes
SHA-256: 08d1cd0d09f50881c5323b3fa16e077ca21f817dfb37d0641426c60d2e08463d
font_02_sfnt_off00013154.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13154 10848 bytes
SHA-256: 1afef24338f3a33c7a819124e3aaee3eae784736dc5a3d07cb717751c7cd1e91

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