Malicious PDF — malware analysis report

Static analysis result for SHA-256 2688447609f84702…

MALICIOUS

PDF

65.0 KB Created: 2021-09-06 05:00:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 9f2fdb3f050f12bde7a2156ea7943047 SHA-1: 8369ab4d7143ca56b0092b3b6d0b9238a083628f SHA-256: 2688447609f847024b017d0e9a051d270dbec0484ba4f861f6300d8f60963dbf
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is a common technique for delivering malicious content. The heuristics indicate that the PDF acts as a link farm, directing users to compromised WordPress sites and potentially disposable hosting. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests a phishing or trojan distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7964

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://www.glasswindowequipment.com/wp-content/plugins/super-forms/uploads/php/files/d47aa2f1489632afcbe1351bb6613256/37500837736.pdf In PDF document text
    • http://alexanderjamesbackcatalogue.com/userfiles/file/41129691181.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/eba64669fc48da476059025d42e19f6d/76300809474.pdfIn PDF document text
    • http://noxsun.com/jingkelun/userfiles/files/20210819231159.pdfIn PDF document text
    • https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/ca4ee8f515a73941eff39855007b65cf/zegamejuraxadopadugodupar.pdfIn PDF document text
    • http://vorne-sitzen.eu/pcms/content/file/wifivopege.pdfIn PDF document text
    • https://razvozka24.ru/wp-content/plugins/super-forms/uploads/php/files/c8413274fa1ecbd35d16137feab8135f/25513297698.pdfIn PDF document text
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/16088551d4b836---21274446369.pdfIn PDF document text
    • https://jodhpurtravels.com/nbloom/fckuploads/file/nirakila.pdfIn PDF document text
    • http://signexpowholesale.com/project-new/christianbook/upload_images/file/35136330198.pdfIn PDF document text
    • https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/cudjd16jg0kotk2ur0mb2s2n55/34883680505.pdfIn PDF document text
    • https://www.restaurant-latableedevercel.com/ckfinder/userfiles/files/tivulazapadozigar.pdfIn PDF document text
    • http://regalmotors-jp.com/js/upload/files/gunago.pdfIn PDF document text
    • https://sikanderajam.com/Robinson/ckfinder/userfiles/files/52213648997.pdfIn PDF document text
    • http://wf515345.tw/CKEdit/upload/files/daminumuwaxerumokujus.pdfIn PDF document text
    • http://argentum.com/wp-content/plugins/super-forms/uploads/php/files/pbtp1uftt2ncc6al33a3i7gv76/41940085237.pdfIn PDF document text
    • https://rafaela-motores.com/userfiles/file/midukusamawuxuziwuto.pdfIn PDF document text
    • http://labmansour.com/app/webroot/js/ckfinder/userfiles/files/bupadezawemigemadaguxaja.pdfIn PDF document text
    • https://propertiproperty.com/Uploads/userfiles/files/luwutadevow.pdfIn PDF document text
    • https://lederstuehle-shop.de/ckfinder/userfiles/files/75611696776.pdfIn PDF document text
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071ecb22ef45---bapabaduvuma.pdfIn PDF document text
    • https://amrapalispot.com/userfiles/file/ruxuse.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=the+defining+decade+meg+jay+pdf+free+downloadPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7DC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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