Malicious PDF — malware analysis report

Static analysis result for SHA-256 55c6d0de4d01f532…

MALICIOUS

PDF

231.5 KB Created: 2021-07-07 08:36:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: d7e701616c98d1eee3b1e79e92b37091 SHA-1: 70bc8d8f7aaa9d65ee563cbd47c49e540a23585a SHA-256: 55c6d0de4d01f53293f24a9b53d5ae923f04c9da7033a68c74252e225e5f97af
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document exhibits characteristics of an advance-fee scam, aiming to trick users with promises of prizes or funds. It contains numerous external links, many pointing to compromised WordPress sites, suggesting a distribution network for malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely involving the delivery of further malware or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9852

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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://medvor.ru/uplcv?utm_term=police+story+3+super+cop PDF link annotation
    • https://www.arc-welding.co.uk/wp-content/plugins/super-forms/uploads/php/files/c3291a7tban6upu06g6805kh41/bomedelokifukif.pdfIn PDF document text
    • http://cdwy028.com/uploadfile/file/20210609230123.pdfIn PDF document text
    • https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/7864a139e708145ca19f78b4b88952b5/jivesifutitot.pdfIn PDF document text
    • https://www.entornopublicitario.com/wp-content/plugins/super-forms/uploads/php/files/ae443446a4c14652e48b6a417ff2af7f/33653767106.pdfIn PDF document text
    • https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/kfoq9lmmbu3p31rimnqc0n5cmp/wozamesebovivikuxeni.pdfIn PDF document text
    • http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160acf51ccf523---kawovafubimimizawimosajox.pdfIn PDF document text
    • https://earthideasawnings.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ad84a24011---58060446099.pdfIn PDF document text
    • http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160a3909c02e4c---28963757016.pdfIn PDF document text
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b826b1255dc---99434115537.pdfIn PDF document text
    • https://dancleland.com/img/upload/file/54410045993.pdfIn PDF document text
    • http://gwardiajuvenia.pl/zdjecia/fck/file/pokelonamesaruferarolax.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/11vqb19pu5bqgoqt6avofmnk12/34081178069.pdfIn PDF document text
    • http://cafemsoffice.com/userfiles/files/76517624327.pdfIn PDF document text
    • https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608ec5636b247---wilural.pdfIn PDF document text
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160b530f858643---69572222573.pdfIn PDF document text
    • https://avis-medical.ma/wp-content/plugins/super-forms/uploads/php/files/cea964d5b300e2914037e5590ac00d66/94479759168.pdfIn PDF document text
    • https://delphin-bau.com/ckfinder/upload/files/79088086173.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/7taobc01o8q0h8bcuhgqvc52o5/pefukazafol.pdfIn PDF document text
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1bffa0aba2---13383461167.pdfIn PDF document text
    • http://www.introspekta.si/ckfinder/ckeditor_uploaded_files/files/nibizupilanijabi.pdfIn PDF document text
    • http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160bc63e623c05---33245871067.pdfIn PDF document text
    • https://cruiseship.cruises/wp-content/plugins/super-forms/uploads/php/files/9sn4caag3ibs18c6jeg7riqecb/24467067185.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/qe9csb30hm8scbdhkac28g00l6/majel.pdfIn PDF document text
    • http://www.phuongdonggolf.vn/app/webroot/uploads/files/kenejafubu.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_off00033310.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33310 17492 bytes
SHA-256: 344d7eb3b75c4a5d01de9e234994ecacd94acc110de1fa65e672deac1ab35166
font_01_sfnt_off00035ffa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35FFA 10488 bytes
SHA-256: b2a10f42938b2723517850a0b07dd61c1b5a9b92d4441e690e58abaafc847ad7
font_02_sfnt_off0003780e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3780E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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