Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3ef63e2f8197a47…

MALICIOUS

PDF

85.6 KB Created: 2021-10-08 20:31:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-21
MD5: 75066ab34e6eda829a51a0c200c2b070 SHA-1: 72f7091e8a3195b262697cc0f53af0cb5552ead8 SHA-256: d3ef63e2f8197a4717a6cbf480230d491a5ebd80bd6fe8e650c199aa57ae8322
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://medvor.ru/uplcv?utm_term=trade+practices+act+1974 PDF link annotation
    • https://kapokcmassage.com/uploads/files/202109010921191122.pdfIn PDF document text
    • http://medicaldistri.com/ckfinder_files/files/33706200477.pdfIn PDF document text
    • https://tskrea.com/userfiles/file/kujuwudi.pdfIn PDF document text
    • http://skpizzasubs.com/uploads/files/55512647302.pdfIn PDF document text
    • https://airshow-bg.com/file/96015848412.pdfIn PDF document text
    • https://celovechurch.org/wp-content/plugins/super-forms/uploads/php/files/f2076ccdd2a3aec9ef74701d5f549bd1/49557968378.pdfIn PDF document text
    • http://yeditepegumruk.com/userfiles/kawogikexusekoxamisejewib.pdfIn PDF document text
    • http://billagelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/tugekal.pdfIn PDF document text
    • http://nkmate.com/FileData/ckfinder/files/20211004_312B5A6D4137D65A.pdfIn PDF document text
    • http://anabakorea.jp/userfiles/file/38258841006.pdfIn PDF document text
    • https://factorysales.com/userfiles/files/19916200207.pdfIn PDF document text
    • http://dream-mebel.com/pic/file/7780484194.pdfIn PDF document text
    • http://ttmplus.com/userfiles/files/13333361145.pdfIn PDF document text
    • http://www.aamuhsv-madisonalumni.org/files/files/3851803442.pdfIn PDF document text
    • https://vico-domrep.com/ckfinder/userfiles/files/xarogofisuz.pdfIn PDF document text
    • http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d1e7d48d31---xomuje.pdfIn PDF document text
    • http://electriccityusa.com/images/fck_uploads/file/jomevifazora.pdfIn PDF document text
    • http://sarkar.ie/userfiles/file/nupure.pdfIn PDF document text
    • http://gnatowski.pl/attachments/file/97826195720.pdfIn PDF document text
    • https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/21e993055e29e2adc9faa88e776ace08/savukixotanefi.pdfIn PDF document text
    • https://www.accidentinjuryalbuquerque.com/wp-content/plugins/super-forms/uploads/php/files/l5qp3f6khmlg7qpd2g1dimnj31/dodaxizodudekore.pdfIn PDF document text
    • https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1615dfcfbb9ab6---42987853781.pdfIn PDF document text
    • https://myhoorayhealth.com/wp-content/plugins/super-forms/uploads/php/files/c4dd58d4d04f3ea8b2c65bcfccc3fd34/66926545307.pdfIn PDF document text
    • https://travelone.ae/userfiles/files/49305286894.pdfIn PDF document text
    • http://phuwangnam.com/user_file/file/zigakufigupati.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_off0000ec14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC14 10548 bytes
SHA-256: c9d1e6f283c97be3a448eea9e898473ae02ef19c85efd978c0e59c5a81645d39
font_01_sfnt_off0001045a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1045A 17172 bytes
SHA-256: 66da8bb95413f9a9e65495a3a0660679893b358d19d73a1659ccfd1884a94cbd
font_02_sfnt_off000130bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130BC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1