Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad5cdf1cf8eabfb6…

MALICIOUS

PDF

199.8 KB Created: 2021-06-27 09:44:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: a3d9e0fd7074125d0381d83267563dc9 SHA-1: 77e56611be731dbce72dd6a3547e2bbf1117d54c SHA-256: ad5cdf1cf8eabfb64371311244d4ad9a2d6dab22fdeeaca90e0875fba8ce2de3
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links, many pointing to compromised WordPress upload directories, suggesting a link farm designed to redirect users to malicious content. The PDF's structure and the presence of external URIs strongly suggest it's part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7219

Heuristics 4

  • 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.
  • 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 https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3b7e1a65a9---zowesi.pdf In PDF document text
    • http://allamericannursing.com/userfiles/file/kaxigagolisilovawu.pdfIn PDF document text
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/b61e342c5c04a7b621fcdb11356011fd/jiwemugujidikuwuda.pdfIn PDF document text
    • https://www.basur-tedavisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b84c9bbf25---zajuso.pdfIn PDF document text
    • https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608835a310d7f---keradema.pdfIn PDF document text
    • https://bindazzled.com.au/wp-content/plugins/super-forms/uploads/php/files/794c8516d5315771ab67cac18904ad97/zatotevesir.pdfIn PDF document text
    • https://www.lightingdynamics.com/wp-content/plugins/super-forms/uploads/php/files/f47eedfd303ccb3834555621cd01dbd9/234544584.pdfIn PDF document text
    • http://ventilyatsia-v-sochi.ru/ckfinder/userfiles/files/73843133849.pdfIn PDF document text
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac95dbf41c0---55569414483.pdfIn PDF document text
    • https://xn--80aaaglcftt5alesfkk7f.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/32fd3fe0fe78b74716f6a278cecc5542/lozufu.pdfIn PDF document text
    • https://doellefjelde-mussemarked.dk/images/newsmail/file/rexabazizevizuluti.pdfIn PDF document text
    • https://fiambreszav.com/wp-content/plugins/super-forms/uploads/php/files/8a81bc33126c69de4f1d87b1926b58d7/fafuged.pdfIn PDF document text
    • http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c0c6b963bff---87506254534.pdfIn PDF document text
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d5492ef6ca---48058865369.pdfIn PDF document text
    • http://technoculture.cz/admin/upload/file/78949137638.pdfIn PDF document text
    • https://gdr.co.il/wp-content/plugins/super-forms/uploads/php/files/0dc4ef11a2273579e1c19830a2fb8c5e/50802879396.pdfIn PDF document text
    • http://npi-management.com/ressource/site-image/files/wojiwobejijutenuwutuxewi.pdfIn PDF document text
    • http://batiment-tunisie.com/userfiles/file/36560146184.pdfIn PDF document text
    • http://amoy-art.com/Upload/file/zoxevetijetukasisuwevufa.pdfIn PDF document text
    • http://metrocars.london/survey/userfiles/files/xamanezovufukozoru.pdfIn PDF document text
    • https://greyquotient.com/wp-content/plugins/super-forms/uploads/php/files/2e9910e5909d67fb2bb09eefb1bc4e19/gabataxiv.pdfIn PDF document text
    • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c79c57a1424---31998534464.pdfIn PDF document text
    • https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/8c342498060f324bee3a5ee664ac49c9/25871644393.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=hide+and+seek+the+psychology+of+self+deception+pdfPDF link annotation

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