Malicious PDF — malware analysis report

Static analysis result for SHA-256 863487a802e9814b…

MALICIOUS

PDF

89.1 KB Created: 2021-06-30 22:01:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: d0caa83efc57ec4d2bdbe141faad5f86 SHA-1: dd936dc05e0b759de8221265ef5d8ea8d90e8b08 SHA-256: 863487a802e9814b5f483867bb19455f4b3371595de70e50d7d929a0ba19d68e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous external URIs and links to websites, many of which appear to be hosted on compromised CMS upload directories or disposable domains. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The file's structure and content suggest it functions as a link farm to lure unsuspecting users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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://allytemp.ru/uplcv?utm_term=i+always+have+post+nasal+drip PDF link annotation
    • http://1parareunion-club.com/clients/4/48/482fc251494624b09083a87f212a12d7/File/15712912759.pdfIn PDF document text
    • http://www.sensible-seeds-premium.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a8e781b9e9---pevunitigub.pdfIn PDF document text
    • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7c6f82f2e7---22279892314.pdfIn PDF document text
    • https://atlanthealth.com/wp-content/plugins/super-forms/uploads/php/files/227e78f2eaa610b2c6c811df9f012362/xonerup.pdfIn PDF document text
    • https://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/c4d28f9f40d994b5c02444cb65a0c895/lufomarawadovikuleg.pdfIn PDF document text
    • https://www.nordatec.com/wp-content/plugins/super-forms/uploads/php/files/83upl193p4m4imboao5k8q56vi/wegokidixunirawakoxeliv.pdfIn PDF document text
    • http://midiabyz.com/wp-content/plugins/super-forms/uploads/php/files/242306c21885e3c85714d3bcc7b721db/40609930488.pdfIn PDF document text
    • http://watdoenwevandaag.nl/upload/13117745542.pdfIn PDF document text
    • http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a5db0b60f77---zaxomevotubolegibu.pdfIn PDF document text
    • https://ottenburger.com/userfiles/file/82822688376.pdfIn PDF document text
    • http://arcdesantmarti.com/biocop/Images/images-editor/file/97191165573.pdfIn PDF document text
    • http://brandnewgoods.net/userfiles/file/95594890846.pdfIn PDF document text
    • https://mymovingestimate.com/wp-content/plugins/super-forms/uploads/php/files/aaa281ecc70ddf8085e1eea28cff5d2e/65614065502.pdfIn PDF document text
    • https://theatresaucinema.fr/uploads/file/17735283980.pdfIn PDF document text
    • http://centreforeffectivecoaching.com/media/file/67704620468.pdfIn PDF document text
    • https://vannordenvastgoed.nl/userfiles/file/65459823612.pdfIn PDF document text
    • https://tortugafilms.ca/adminfiles/file/892438237.pdfIn PDF document text
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16079cf22d184d---vazewubabolozinupepozedep.pdfIn PDF document text
    • http://twxcd.com/img-aim/files/lagajaduriwumilijilavatuz.pdfIn PDF document text
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609732774851b---7253983653.pdfIn PDF document text
    • http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/vl6vqmubu5gjl58l928cn7luai/guvamomemipuk.pdfIn PDF document text
    • http://urparitet.ru/admin/ckfinder/userfiles/files/86286845411.pdfIn PDF document text
    • http://matstravel.ru/userfiles/file/gubag.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_off0000fa10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA10 17040 bytes
SHA-256: 2530ce60040a547231c436db3f038fc2bba07957d29f3ce9c1b3331436cfde43
font_01_sfnt_off00012699.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12699 10708 bytes
SHA-256: 452858dfe365b4de802a0aea953786c3f7a0e65490153a6cd4ed14c7251e2f58
font_02_sfnt_off00013f31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F31 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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