Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bc1d08fc0d710ef…

MALICIOUS

PDF

47.7 KB Created: 2021-10-06 01:18:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: bf4252ac6edbb6eef02345c337265712 SHA-1: 22fc59ab8510f6578f81e113f67e5e6e2c66af57 SHA-256: 0bc1d08fc0d710ef60a5738cc6e2cce154fcfa70818e3d1c642cd6c9860b1250
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external links, many pointing to compromised websites or disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to redirect users to malicious content or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8977

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://irlanc.ru/uplcv?utm_term=how+to+redact+a+document PDF link annotation
    • http://saiprogetti.net/userfiles/files/57682480314.pdfIn PDF document text
    • https://tortugafilms.ca/adminfiles/file/25434754925.pdfIn PDF document text
    • https://mvmdigital.gr/files/files/78406987908.pdfIn PDF document text
    • http://baove24h.info/upload/files/lopazigexes.pdfIn PDF document text
    • https://iasvn.org/Images_upload/files/85682065274.pdfIn PDF document text
    • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a0d09ecd6a---94044814478.pdfIn PDF document text
    • https://mkycc4.com/kycc4.com/userfiles/files/37449034265.pdfIn PDF document text
    • http://thaihotelsale.com/FileData/ckfinder/files/20210917_4A7A15A8B90E9D72.pdfIn PDF document text
    • http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/1614137ac81cf4---70751269399.pdfIn PDF document text
    • http://bobhendrix-law.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/dagogepinumesuxagefojax.pdfIn PDF document text
    • https://anzhero-sudzhensk.verlauf-ekb.ru/admin/ckfinder/userfiles/files/tebegiwi.pdfIn PDF document text
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136299523b6e---24734885768.pdfIn PDF document text
    • http://ihdbd.org/upload/files/40017203501.pdfIn PDF document text
    • https://travelone.ae/userfiles/files/96073716646.pdfIn PDF document text
    • http://melodylavernebettencourt.com/media/file/fofukigi.pdfIn PDF document text
    • http://hotelpenza58.ru/ckfinder/userfiles/files/vojerarone.pdfIn PDF document text
    • http://bischofs-scheune.de/userfiles/file/noxaj.pdfIn PDF document text
    • https://thehealerspoint.in/admin/userfiles/file/35056618416.pdfIn PDF document text
    • https://www.shamshabaddiocese.org/files/js/ckfinder/userfiles/files/463432166.pdfIn PDF document text
    • https://sanvexe.vn/webroot/img/files/tomixu.pdfIn PDF document text
    • http://studiophotosfashion.it/userfiles/files/26516652109.pdfIn PDF document text
    • http://ulleungroadtour.com/FileData/ckfinder/files/20210929_14AB7B17F4584A5D.pdfIn PDF document text
    • http://tasfor.com/files/galeria/files/85748518634.pdfIn PDF document text

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