Malicious PDF — malware analysis report

Static analysis result for SHA-256 afdd9c08bfb7f8ca…

MALICIOUS

PDF

54.6 KB Created: 2021-09-01 07:06:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: f123473a4b3e8e2f1b909afb3d45968a SHA-1: e7eaf0d9cddcf38fa66d025e3f580e346d4c2105 SHA-256: afdd9c08bfb7f8ca4f0469ac5bf073068cdcbc41a3c60490f17f51666eb7af3b
154 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded URLs, many of which point to compromised websites or link farms. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or distributing further malware. The document's structure and URL distribution suggest it is designed to lure users into clicking on malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8356

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://www.supair-lux.hu/ckfinder/userfiles/files/wadalunisananozapuxudiso.pdf In PDF document text
    • https://autosaloncenter.com/uploads/file/pobabumimubujizikew.pdfIn PDF document text
    • https://oteaexpert.fr/cite_imgs/file/9183577517.pdfIn PDF document text
    • http://kuehllawpc.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/58723906923.pdfIn PDF document text
    • https://canvasations.com/wp-content/plugins/super-forms/uploads/php/files/jjjuh723jco5emqlent6k7kuu6/21768390784.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608382ea774aa---galeduvuva.pdfIn PDF document text
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/16104e6d6061c9---delusuwemokemiwovebotulan.pdfIn PDF document text
    • https://bowenpainter.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fd896238bee---kowazavajaxadirovad.pdfIn PDF document text
    • http://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1612e953510745---nesaledijew.pdfIn PDF document text
    • https://ruxthai.com/ckfinder/userfiles/files/33656039682.pdfIn PDF document text
    • https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/160c04db21b912---96340817329.pdfIn PDF document text
    • http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612b9177013c6---13508685249.pdfIn PDF document text
    • https://betalinktech.com/blmedia/file/lirigezu.pdfIn PDF document text
    • https://tezerwatch.com/file/upload/files/07-05-10-33-36-71.pdfIn PDF document text
    • http://www.adatechotomasyon.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609903a52e324---zinafakexanobex.pdfIn PDF document text
    • https://zweiund40.com/wp-content/plugins/super-forms/uploads/php/files/tdpumm1kjr1nsj3qm3759hkehv/gawudadobet.pdfIn PDF document text
    • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f77c29206b---66218915876.pdfIn PDF document text
    • http://namlongprojects.com/images/uploads/files/pidasosixiwi.pdfIn PDF document text
    • http://shopsuathientu.com/uploads/userfiles/file/37384867531.pdfIn PDF document text
    • http://czytamzezrozumieniem.pl/userfiles/file/39305806106.pdfIn PDF document text
    • https://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/evscvi07uu50fok0mcfg54rd29/zudixazaguruwil.pdfIn PDF document text
    • http://copelandreunionla.com/clients/6/66/66f6f3de7053633686652f51c4c00696/File/29149930978.pdfIn PDF document text
    • http://myphamlulanjina.com/upload/files/75546950387.pdfIn PDF document text
    • http://artstudiodesign.it/userfiles/files/72745687144.pdfIn PDF document text
    • https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3a11edd16a---63170397217.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=downloadable+free+printable+paper+flower+templatesPDF link annotation

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