Malicious PDF — malware analysis report

Static analysis result for SHA-256 01a7527f5249e070…

MALICIOUS

PDF

88.1 KB Created: 2021-11-10 06:42:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-01
MD5: 6251d95a2320ae1c588d24c3c8f864e1 SHA-1: 6c25a6351529b47eb643a0cba4f3e6eaaaadfa30 SHA-256: 01a7527f5249e070c6a164aebe7d778f21131114a11a6add2938ae4e6193d279
214 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://huntic.ru/uplcv?utm_term=consequences+of+dehydration In PDF document text
    • https://textolinguisticsolutions.com/upload/editor/file/kofozenolimixupisuwawesu.pdfIn PDF document text
    • http://www.arborvitae.cz/ckfinder/userfiles/files/72375875999.pdfIn PDF document text
    • http://nd-58.ru/wp-content/plugins/super-forms/uploads/php/files/d01c145476e092609a2df796e814d6a6/rosesi.pdfIn PDF document text
    • https://universal4shipping.net/userfiles/file/wizufamulig.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139c97a04593---rawifalixek.pdfIn PDF document text
    • http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/1616bb681629c8---nenuxikerolamemeselabetiw.pdfIn PDF document text
    • https://salvamontbihor.ro/app/webroot/files/userfiles/files/lulorumek.pdfIn PDF document text
    • http://sevennews.com.br/ckfinder/userfiles/files/68055921858.pdfIn PDF document text
    • http://vetsnab32.ru/userfiles/file/21098548602.pdfIn PDF document text
    • http://codienlanhtrangia.com/Images_upload/files/wamamijaninug.pdfIn PDF document text
    • http://tw-jia.com/uploads/files/202109111417539431.pdfIn PDF document text
    • https://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/t89v6d662br7e7od18sqgsoro3/porubabulatugakiv.pdfIn PDF document text
    • https://zagi.hr/files/13266836734.pdfIn PDF document text
    • https://thegioidongphuc.net/ckfinder/userfiles/files/13908729793.pdfIn PDF document text
    • https://bgg.pirkitpadangas.lt/ckfinder/userfiles/files/66352814311.pdfIn PDF document text
    • https://elsadaulte.com/ckfinder/userfiles/files/50989550634.pdfIn PDF document text
    • http://koala-al.com/d/files/rijotewixodafudabumuf.pdfIn PDF document text
    • http://intrinhgia.com/admin/webroot/upload/image/files/takimi.pdfIn PDF document text
    • https://gtselect.fr/ckfinder/userfiles/files/30270500268.pdfIn PDF document text
    • http://silver.jo/ckfinder/blanc/files/730746323.pdfIn PDF document text
    • http://chataphan.com/file_media/file_image/file/xawukesuzezifozukaxu.pdfIn PDF document text
    • https://deesudcoolingtower.com/userfiles/file/tobukamaje.pdfIn PDF document text
    • http://tycoonmedical.com/userfiles/file/98809065387.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_off0000edf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDF8 16540 bytes
SHA-256: 45015263e28dbf00792e0fa83ae0fb9123af5110209f191c00797c49350166ef
font_01_sfnt_off0001051e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1051E 10920 bytes
SHA-256: 906c93f422daf9bbf8236c0af788101ef7b87b4757fd105ca276637235b04e86
font_02_sfnt_off00011e31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E31 20240 bytes
SHA-256: 04cd30569073c7e19032f8bdc7ede8e43bd27c3705e82f00854dd2a062272cac