Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9ca9db6c1fdc4cb…

MALICIOUS

PDF

75.2 KB Created: 2022-04-01 16:01:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-26
MD5: 7bf14d122c70babd91adfe677a2c8bdb SHA-1: 9db776ecf5df61b9e50908c36c4b006e25a305d1 SHA-256: a9ca9db6c1fdc4cbcf1bd18df8ea596134934719e2b576972e93c2199ff80a3f
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://podar.co.za/YmrXLWy8?keyword=why%20did%20my%20tv%20antenna%20stopped%20working PDF link annotation
    • https://gaxasexafarud.weebly.com/uploads/1/3/4/5/134590452/fisuguniman-kaxizifagowet-mevanuvaj-xefowoku.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1622d3561b769a---59042186089.pdfIn PDF document text
    • https://vafuzetok.weebly.com/uploads/1/3/2/7/132740798/5455118.pdfIn PDF document text
    • https://renupipa.weebly.com/uploads/1/3/4/3/134383378/81bf089f5d.pdfIn PDF document text
    • https://vizifeji.weebly.com/uploads/1/3/0/7/130775372/5410524.pdfIn PDF document text
    • https://isped.cz/kcfinder/upload/files/1883686121.pdfIn PDF document text
    • https://hosvagyok.hu/userfiles/file/surojufababelepe.pdfIn PDF document text
    • https://pozufijuxib.weebly.com/uploads/1/3/0/7/130775557/5772257.pdfIn PDF document text
    • https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/41d964ee7011deff3921bb249772aa3b/97486717028.pdfIn PDF document text
    • https://mumixiginuwogi.weebly.com/uploads/1/3/4/7/134752923/xezokapuvan.pdfIn PDF document text
    • https://jerewerek.weebly.com/uploads/1/3/5/3/135349205/f827812b5.pdfIn PDF document text
    • http://balbu.eu/uploads/news/file/fosuwejorotoxenad.pdfIn PDF document text
    • http://bahiratpatil.com/kcfinder/upload/files/67566286814.pdfIn PDF document text
    • http://tuanlongland.com/upload/files/50303250005.pdfIn PDF document text
    • https://myleague.vn/uploadfiles/kcfinder/files/20063130296.pdfIn PDF document text
    • https://bursakaynak.com/userfiles/file/5111805508.pdfIn PDF document text
    • https://puvixote.weebly.com/uploads/1/3/5/4/135400279/8218930.pdfIn PDF document text
    • https://scmsgroup.org/ckfinder/userfiles/files/15350601836.pdfIn PDF document text
    • https://voderixata.weebly.com/uploads/1/3/4/2/134266977/lapexojufi.pdfIn PDF document text
    • https://www.theknowledgeonline.com/files/lib/ckfinder/userfiles/files/37853193064.pdfIn PDF document text
    • https://staffinghub.complifly.com/ckeditor/kcfinder/upload/files/19620727037.pdfIn PDF document text
    • https://balajihighfields.in/userfiles/file/venasujexoxepejaluj.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 extracted file (font_00_sfnt_off0000c167.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c167.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c167.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC167 11144 bytes
SHA-256: 0608367af78f90926de03f95f2e6e5444e766025fd18ca57669e59cb79daae84
font_01_sfnt_off0000db24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB24 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f336.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF336 16968 bytes
SHA-256: c54ed5fc31e300256dcac0211e68f9a0d51b2492aa6b250711b5556c3fb4a053