Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fca7afb22a864de…

MALICIOUS

PDF

85.9 KB Created: 2021-06-21 08:59:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 0bd4acc20c84474ba73ae926fc61de7b SHA-1: 25c45ffb2ba98b8b298550f5893f1d0b90a074e3 SHA-256: 3fca7afb22a864de90c4550f4cd389eab8a7fab48fdfeea87b24baa7db9715fa
154 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many pointing to compromised WordPress sites, suggesting it functions as a link farm. The presence of 'utm_term_redirector=True' and the structure of the URLs indicate a deliberate attempt to redirect users to potentially harmful destinations, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9729

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://aleeblog.com/wp-content/plugins/super-forms/uploads/php/files/ci8gkpgh60d1ih9dio6as7ahq7/32647623812.pdf In PDF document text
    • https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/f0njnqi0vp0s7r4ln6k9th0ih5/63009422500.pdfIn PDF document text
    • https://seataclighting.com/wp-content/plugins/super-forms/uploads/php/files/4307eed7079b985f7f28c61cc688c021/32367332913.pdfIn PDF document text
    • https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/160979337cf3e4---80805664798.pdfIn PDF document text
    • http://technoculture.cz/admin/upload/file/pipojesidazezote.pdfIn PDF document text
    • http://sskj.pl/userfiles/file/bopisexokerobimog.pdfIn PDF document text
    • http://delawaretravelmedicine.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098f4e8b0c95---18782253875.pdfIn PDF document text
    • https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/rs7oq5jlb6a8mskitaus88ap37/89999116511.pdfIn PDF document text
    • http://househouse.it/userfiles/files/vugarimofopokudomisu.pdfIn PDF document text
    • http://maychamsocda.vn/images/userfiles/file/fufidotilugoxilenilodoj.pdfIn PDF document text
    • http://gerd-pollak.de/userfiles/file/53354543738.pdfIn PDF document text
    • http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160798c3901cd6---xetagafojenijosukev.pdfIn PDF document text
    • http://jockmurray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a29043e27ed---jazukelaviwo.pdfIn PDF document text
    • http://www.lauricedale.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160965f96e36fd---89744858936.pdfIn PDF document text
    • http://0851gay.org/userfiles/202106file/2021061500372670554.pdfIn PDF document text
    • http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6aa45b3cc2---zobunoz.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=arjun+reddy+drinking+imagesPDF link annotation

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