Malicious PDF — malware analysis report

Static analysis result for SHA-256 63f0c6e1868ad5f5…

MALICIOUS

PDF

86.9 KB Created: 2021-07-25 00:53:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 4c0d2b279d29b88588c437dc2a790426 SHA-1: 467882feaecb3e1008033fe6410f5da4ac1becc7 SHA-256: 63f0c6e1868ad5f59a2b6c5fcbf2d8b72e5088652d639dc0bfe69799873044ed
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links pointing to various websites, many of which are hosted on compromised CMS platforms or disposable domains, indicating a link farm or SEO manipulation tactic. ClamAV detected this file as Pdf.Phishing.Trojan, and ML classifiers also flagged it as malicious. The embedded URLs suggest an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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://www.focus.mu/wp-content/plugins/super-forms/uploads/php/files/08528b6ad7ba87fbf2eaf06994fc1017/kudefobotakunakepowaz.pdf In PDF document text
    • http://bjhtdszdh.com/v15/Upload/file/2021591415508681.pdfIn PDF document text
    • https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160b9be3c30524---6956557601.pdfIn PDF document text
    • http://taiwancy.com/app/webroot/userfiles/files/35485234969.pdfIn PDF document text
    • http://burchiellati.com./file_fck/file/57718626476.pdfIn PDF document text
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/160a6262eb0f87---56191689132.pdfIn PDF document text
    • https://greshamgilessalon.com/wp-content/plugins/super-forms/uploads/php/files/1fa795bdfbd3265e247ec82aef589f4c/85052986494.pdfIn PDF document text
    • https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/16083acfeb6bac---47619120186.pdfIn PDF document text
    • http://topimmigrationlawyer.org/ckfinder/userfiles/files/rowobepimotinipiraxaga.pdfIn PDF document text
    • https://k9-warrior.com/wp-content/plugins/super-forms/uploads/php/files/2p4ci8mejj7rcq6mt7lm0gdua2/rukelimiza.pdfIn PDF document text
    • http://okna-dvere-online.cz/media/upload/upload/file/18660433977.pdfIn PDF document text
    • http://modnyi-buket.ru/uploads/files/kepizovowafoxodomosad.pdfIn PDF document text
    • https://latework.cz/soubory/nuwaresogajoli.pdfIn PDF document text
    • http://barbusci.it/maisUserFile/file/81834956961.pdfIn PDF document text
    • http://ok-poland.com/userfiles/file/veraxujasigodinetavip.pdfIn PDF document text
    • https://eyestech.in/wp-content/plugins/super-forms/uploads/php/files/sgmh5hh03uons970l38scdk4pt/gopuvizuzazufowofexoxuz.pdfIn PDF document text
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c28fc13b40---pefewugegaluwaliwum.pdfIn PDF document text
    • http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e0d5563785---99362791753.pdfIn PDF document text
    • https://alatheir.com/atheirwsfiles/file/jegerewujafozinofun.pdfIn PDF document text
    • http://therealmccoyfamilyreunion.com/clients/f/f9/f9ea119420dddc0cc5ac7622830b9f68/File/83996225208.pdfIn PDF document text
    • https://szalkasszorutacskok.hu/app/webroot/files/content/files/dunixedufavoketoze.pdfIn PDF document text
    • https://southtours.com/wp-content/plugins/super-forms/uploads/php/files/p2taaqt0vbd05bbh5phfgbavmq/30622896532.pdfIn PDF document text
    • http://www.lebedosapartotel.com/data/yukle/files/tikadimubanuzo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=exercices+de+maths+3%C3%A8me+ann%C3%A9e+coll%C3%A8gePDF link annotation
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d77c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD77C 16100 bytes
SHA-256: 6b54a3f50d1a413a5c8c0ed289a9c866e37e8bd73df0b162fe7132700ce54c18
font_01_sfnt_off0000ecba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECBA 17128 bytes
SHA-256: 497c70b8bf251ff07b12e54c5df30c70a3fbdb0e4306c42b2524c77171dcddfd
font_02_sfnt_off00011824.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11824 11384 bytes
SHA-256: 2496f96d0c6e9c0f7830165d51c3de17d1e6a2a15ab9a1f9612555ed67aa4450
font_03_sfnt_off000131f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131F3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.