Malicious PDF — malware analysis report

Static analysis result for SHA-256 5518de0015305de8…

MALICIOUS

PDF

63.2 KB Created: 2021-09-10 02:58:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-04
MD5: 70323dfa6e15a944a733c5fcca2b1287 SHA-1: 04f15cfd702503473a0c9703b04e2d144e9a1549 SHA-256: 5518de0015305de88d92dc44015917a38e885e936d879fe9305d42c1bd40dcab
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous embedded URLs, many of which point to compromised websites or disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier further support its malicious nature. While no scripts were extracted, the structure and URL patterns are consistent with phishing or malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5692

Heuristics 5

  • 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
  • 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 http://forti.in/userfiles/file/71185995784.pdf In PDF document text
    • http://xn--q20b13r9leepaeb.net/upload/file/202109100837161079.pdfIn PDF document text
    • http://fitviewer.com/files/file/38789728376.pdfIn PDF document text
    • http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613864c06d66c---kezejozosap.pdfIn PDF document text
    • https://taxforce.nl/userfiles/files/lepoponawefazekelilutofum.pdfIn PDF document text
    • https://thaibamboorestaurant.ca/phpsites/bard_ford/uploads/file/tezetujotoforowewifosi.pdfIn PDF document text
    • http://sqc.jp/user_data/editor/ckfinder/core/connector/php/upload/files/mariwoweripozoxuwikege.pdfIn PDF document text
    • http://test-immo.com/file/sivejuzegufumiwovumusamo.pdfIn PDF document text
    • http://kerama.altrodesign.eu/ckfinder/userfiles/files/87438120701.pdfIn PDF document text
    • http://bndweb.nl/upload/files/49088071258.pdfIn PDF document text
    • http://www.yankey.com.tw/demo/public/editor/ckfinder/upload/user_upload/files/wuvon.pdfIn PDF document text
    • http://www.saraviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a800644661---15479816130.pdfIn PDF document text
    • http://trevelci.ru/ckfinder/userfiles/files/19612131381.pdfIn PDF document text
    • http://kennycojewelry.com/userfiles/files/202109/1630899440.pdfIn PDF document text
    • https://avphunter.ro/ckfinder/userfiles/files/mopevel.pdfIn PDF document text
    • http://favorit.pl/userfiles/file/12311465565.pdfIn PDF document text
    • https://e-tta.com/app/webroot/userfiles/files/kakiburinu.pdfIn PDF document text
    • https://harom.ro/files/file/nonaximetudaxuz.pdfIn PDF document text
    • https://postelezmasivu-praha.cz/ckfinder/userfiles/files/56072355076.pdfIn PDF document text
    • http://pharmabiosolutions.com/filespath/files/20210910014817.pdfIn PDF document text
    • http://rickgrisolia.com/userfiles/files/67229421463.pdfIn PDF document text
    • https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/4f64a961145bcce74034791ac6bae383/kazulusafi.pdfIn PDF document text
    • http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613a7ff246217---jefozorajev.pdfIn PDF document text
    • http://brukbet.com/user_images/file/57642912853.pdfIn PDF document text
    • http://gyn-ordi.at/myPix/file/62957762584.pdfIn PDF document text
    • https://mmagame.com/userfiles/file/30256570595.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=sensory+division+of+the+peripheral+nervous+systemPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d998.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD998 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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