Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f0503b95c0b61b9…

MALICIOUS

PDF

140.0 KB Created: 2021-06-29 15:43:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: 7c406f97e0459bd95b95f7ebc3debbe0 SHA-1: 64f1901e3015ac8af8a2bd6fc05cffd995534055 SHA-256: 8f0503b95c0b61b96fb46e51b1952e194968207a9f41f5144e8b92cea68ccff0
124 Risk Score

Malware Insights

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

The file was detected as a PDF phishing trojan by ClamAV. Static analysis revealed it functions as a link farm, with numerous URLs pointing to files hosted on compromised WordPress sites. These links likely serve as a lure to deliver a secondary payload or phish for credentials.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4835

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://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b03ca825e57---57800113916.pdf In PDF document text
    • https://webgirls-studio.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d4cc48a507---guteni.pdfIn PDF document text
    • http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607324cd3a482---39028835370.pdfIn PDF document text
    • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a87c8163ff---91499680009.pdfIn PDF document text
    • https://completecollegestrategies.com/wp-content/plugins/super-forms/uploads/php/files/b70b06da071c2352c0b955a1f1e104ff/2494272718.pdfIn PDF document text
    • http://cleanyachts.it/writable/public/userfiles/file/danikaxuniwinonurotewugat.pdfIn PDF document text
    • http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4795a30b19---tumanoridoviv.pdfIn PDF document text
    • https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c4fcbc6d1b---tevumiteke.pdfIn PDF document text
    • http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083640a1d119---miperesazubabimobezebesap.pdfIn PDF document text
    • http://alexhofford.com/temp/files/file/retisugoxajaxusiba.pdfIn PDF document text
    • http://rgn2u.com/userfiles/files/perigilaxaw.pdfIn PDF document text
    • https://www.edutechusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f5873be9f3---51811315876.pdfIn PDF document text
    • http://strategie-online.net/catalogue_dynamique/file/89375849538.pdfIn PDF document text
    • http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085236b53573---9224257862.pdfIn PDF document text
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/btgis60hbd4jfpc8b7uk5vvlf2/tebuxejatora.pdfIn PDF document text
    • https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160885a0de81aa---48604758340.pdfIn PDF document text
    • http://animationcoach.com/userfiles/file/noxusozurodixasuju.pdfIn PDF document text
    • https://digireg.es/upload/3442383508.pdfIn PDF document text
    • https://ceilford.org/wp-content/plugins/super-forms/uploads/php/files/9b394996acc535812beb2ee80ffbb3f6/ferenajaw.pdfIn PDF document text
    • https://onlinendttraining.net/files/kusutidexo.pdfIn PDF document text
    • https://laser-arena.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9396e18b7---zekoponarusufesomubotok.pdfIn PDF document text
    • http://musiconthebay.org/clients/2/26/269dd5bc96e197da989a8dccc71442af/File/votovamifufifivijelopetiv.pdfIn PDF document text
    • https://ketgate.eu/wp-content/plugins/super-forms/uploads/php/files/f353de7cc12c8bee2283319ac9453cdf/7852916479.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=dbz+cell+1st+formPDF link annotation

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