Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bc470abb75ce3f3…

MALICIOUS

PDF

89.0 KB Created: 2021-10-17 18:46:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-20
MD5: c448f07d12e0355d1cd7640b8ac8fb87 SHA-1: ff5cda9dcf8ea74ed8e3c5d03ac2edd03fc1a325 SHA-256: 3bc470abb75ce3f3e7cde25fb1f5924a96d7185864800edcec54f960b3a48564
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://rhuyscampingcar.fr/images/files/44297164799.pdf In PDF document text
    • https://www.renfrewareahealthvillage.ca/ckfinder/userfiles/files/35714808305.pdfIn PDF document text
    • https://militarynetwork.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16160363bf3830---87399979069.pdfIn PDF document text
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/1616102e152507---52486807498.pdfIn PDF document text
    • http://www.bash.cl/media/file/46185039796.pdfIn PDF document text
    • http://ccshecea.org/upload/files/faxuronarurerowerolopuza.pdfIn PDF document text
    • https://kapokcmassage.com/uploads/files/202109012112266466.pdfIn PDF document text
    • https://truckforceone.eu/upload/editor/file/fuzobuduvobozidawib.pdfIn PDF document text
    • https://glaze-metalart.com/upload/files/sugabezefakuvezuwa.pdfIn PDF document text
    • http://bawaconstructions.com/editorData/file/74103318806.pdfIn PDF document text
    • http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/16139f7d274c49---zadepimimidezeto.pdfIn PDF document text
    • http://phoiinnhiet.com/images/uploads/files/webeziresomupusizipesa.pdfIn PDF document text
    • http://studiospazioambiente.it/userfiles/files/90948597553.pdfIn PDF document text
    • https://www.corpeverest.com/ckfinder/userfiles/files/1302456648.pdfIn PDF document text
    • https://bhopalliteraturefestival.com/mpsdp/uploads/files/95129448969.pdfIn PDF document text
    • http://thegioimercedes.com/upload/files/41582757399.pdfIn PDF document text
    • http://sanyosushiglendora.com/uploads/files/sidomeje.pdfIn PDF document text
    • http://styrexon.cz/userfiles/file/xebupesijogazirolanubitiv.pdfIn PDF document text
    • http://myoffice2561.sesao33.net/UserFiles/File/87830480541.pdfIn PDF document text
    • https://nobelboya.com/userfiles/file/nukasesuxajurosowaki.pdfIn PDF document text
    • http://topflexsports.com/uploads/13257274185.pdfIn PDF document text
    • http://instant-image.net/UserFiles/Site/File/vujisaja.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/23D8k0Ec_6w/uplcv?utm_term=writing+practice+for+kids+pdfPDF 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 extracted file (font_00_sfnt_off0000f691.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000f691.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f691.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF691 18408 bytes
SHA-256: aeb2a762e62333b233460f3a42dff7d48d6d8de25043d9b4b5d6d6715c1cd751
font_01_sfnt_off0001258e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1258E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013da5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13DA5 10832 bytes
SHA-256: 076e12be79cd944369d600e52153d735637651931d11ffd05c374bdaa4d5583b