Malicious PDF — malware analysis report

Static analysis result for SHA-256 96d00df3b63017c2…

MALICIOUS

PDF

48.1 KB Created: 2021-05-23 16:50:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 794a6f60fb262027068e65aad19cdb7e SHA-1: f2072e520d9d964879e285b50c165412789cea09 SHA-256: 96d00df3b63017c29fa3aecbfabba5a9f9e476843590643ea7cf86c63309d449
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF that uses an image lure, typical of phishing attempts. It contains numerous links pointing to potentially compromised WordPress sites and other domains, suggesting it's part of a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for distributing further malware or conducting phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7248

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 48 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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 https://www.havanasalsa-dance-tours.com/wp-content/plugins/super-forms/uploads/php/files/36d4a2359e6cbaa3ed58a37f1e067c71/70330577520.pdf
    • http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16093a519169d8---52923956611.pdf
    • http://bfr-bialapodlaska.pl/userfiles/file/dufiturutanifadopikida.pdf
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d57c344cc3---45296111991.pdf
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607274cc2d913---58131035087.pdf
    • http://grupogmec.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082bc5fa6d33---16643731957.pdf
    • https://airshow-bg.com/file/fufobupe.pdf
    • http://aihyang.com/userfiles/file/51912634790.pdf
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/nc9mnsa8pgdei31lumiju0h1k7/koponekidepibikupul.pdf
    • https://www.kbstephens.com/wp-content/plugins/super-forms/uploads/php/files/75fefe4052454c095658df776e623b71/71556143831.pdf
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607adebd47520---disomatari.pdf
    • https://canadianrelocation.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8dcdcc873---ziforiwoxilirilonugafi.pdf
    • https://apoiotelecom.com/imagens/img_fckeditor/file/beluboxuxenugunaxava.pdf
    • https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1606f3dfbc2d68---96882185336.pdf
    • http://neuragen.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608ca88ae471d---bijoboralefupoxegoripoz.pdf
    • http://miamiwars.pl/wp-content/plugins/super-forms/uploads/php/files/0fd5c860e8abeb7c0a0c8d9e6e602458/rovurowukaju.pdf
    • http://www.restorationservice.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16082d650c2463---zenotixogobig.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=best+headphones+2019+under+100+euro

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