Malicious PDF — malware analysis report

Static analysis result for SHA-256 5856f0e9dfe87d30…

MALICIOUS

PDF

51.1 KB Created: 2021-07-17 00:03:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 2a33742ba6cb116134736040f8a80c03 SHA-1: 813bcb2a5a93ce3d90dc1f0d6ff7441862ec69a0 SHA-256: 5856f0e9dfe87d303ce18403c1887728ddbdc509b5bd3c182a9be4de368c918b
154 Risk Score

Malware Insights

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

This PDF sample was flagged by multiple heuristics and ClamAV as malicious, specifically indicating phishing and trojan activity. It functions as a link farm, containing numerous URLs pointing to potentially compromised WordPress sites and disposable hosting, likely intended to redirect users to malicious content or phishing pages. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8963

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://naturallabs.fr/userfiles/file/65103827871.pdf In PDF document text
    • http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c2efc2ec2d9---vatagivosup.pdfIn PDF document text
    • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d1d2d8d79b8---52078668001.pdfIn PDF document text
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/16092c40e714c0---69733876880.pdfIn PDF document text
    • http://dyglas.com/userData/board/file/wurimoxelodukejom.pdfIn PDF document text
    • http://kondicionery-fryazino.ru/upload_picture/file/90607865984.pdfIn PDF document text
    • http://bdn10.cz/files/file/99244641753.pdfIn PDF document text
    • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ec9fe8d68c2---nevav.pdfIn PDF document text
    • https://tavio.ru/files/file/zunoximowugi.pdfIn PDF document text
    • https://wegofa.com/userfiles/file/karerasirozibavakenos.pdfIn PDF document text
    • https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a01080948d3---85192406061.pdfIn PDF document text
    • http://cokhisah.com/webroot/img/files/57550440338.pdfIn PDF document text
    • http://www.colormotion.cz/UserFiles/file/38982018695.pdfIn PDF document text
    • http://sanxuatbanthinghiem.org/app/webroot/uploads/files/72924779442.pdfIn PDF document text
    • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ddd98d8120e---rogupe.pdfIn PDF document text
    • http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/1608cdb5c948a2---vabuf.pdfIn PDF document text
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/160c850784a951---26978830366.pdfIn PDF document text
    • http://panda-es.tokyo/yamituki-n/uploads/files/fiduzo.pdfIn PDF document text
    • http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609a07c19792a---mesaxefowukujud.pdfIn PDF document text
    • https://mikepromedia.com/wp-content/plugins/super-forms/uploads/php/files/l97tqvad2re3rqki2k0bj8da80/23123396834.pdfIn PDF document text
    • https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/coi0v97qqsmtpojcerad50roqt/79219980824.pdfIn PDF document text
    • http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160b47d40b0196---74257657789.pdfIn PDF document text
    • http://etnorom.hu/pictures/luzegutiri.pdfIn PDF document text
    • http://karmand24.ir/basefile/ehotel724ir/files/93991192420.pdfIn PDF document text
    • https://iwistw.com/upload/files/xifobi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=never+miss+meaningPDF link annotation

Open this report in the interactive analyzer, or submit your own file for analysis.