Malicious PDF — malware analysis report

Static analysis result for SHA-256 b322089e29be579f…

MALICIOUS

PDF

39.0 KB Created: 2021-09-30 12:43:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 0e74fdf28917fb4d5d17207748e603b4 SHA-1: 311bfe9703888501a1cdbc7eadd28c3cb079992e SHA-256: b322089e29be579f7799ce51d156994660757759cf70aa2fb690f5766ea231fb
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains embedded JavaScript and is flagged by multiple heuristics as malicious, including ML and ClamAV detections. The 'PDF_IMAGE_LURE' heuristic indicates it's likely an image-based phishing lure with a clickable action. The embedded JavaScript and numerous external URIs suggest an attempt to redirect the user to a malicious site for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8588

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 39 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://ecableapp.com/FCKeditor/FCKimgUpload/file/xulozugirijibiga.pdf In PDF document text
    • https://mogilew.ru/userfiles/file/80981207532.pdfIn PDF document text
    • https://giga-tronics.com/userfiles/files/gekuxerafopidi.pdfIn PDF document text
    • https://zniczekowalczyk.com/user_images/file/junabivi.pdfIn PDF document text
    • http://perechen-izdaniy.ru/js/ckfinder/userfiles/files/80507921931.pdfIn PDF document text
    • https://jdsliquorlocker.com/nbloom/fckuploads/file/fifadunijupokalaxit.pdfIn PDF document text
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/1612ecfe4b7233---nibuvuputiv.pdfIn PDF document text
    • http://iphonedown.com/ckfinder/userfiles/files/kugewilunuvira.pdfIn PDF document text
    • https://amoslodge10-org.alljobsinliberia.com/ckfinder/userfiles/files/72923132343.pdfIn PDF document text
    • http://studiopol.com/userfiles/files/runumuxozar.pdfIn PDF document text
    • http://beautifulmoda.com/userfiles/files/15040622601.pdfIn PDF document text
    • https://deesudcoolingtower.com/userfiles/file/betedel.pdfIn PDF document text
    • http://montazerangroup.com/uploader/file/lodejojuzokajuz.pdfIn PDF document text
    • http://techniq.ae/admin/uploadfiles/file/nobugivagukuravugexipule.pdfIn PDF document text
    • https://amrapalispot.com/userfiles/file/josuviwagavokajume.pdfIn PDF document text
    • https://quangcaowebsite.vn/uploads/files/nokelejidiguletuwuno.pdfIn PDF document text
    • http://amblesidewindermere.ca/fckuploads/imageIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=image+picker+androidPDF link annotation

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