Malicious PDF — malware analysis report

Static analysis result for SHA-256 fca6fdde754ea543…

MALICIOUS

PDF

58.2 KB Created: 2021-09-17 18:14:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: e989d24fafc4cff729d6b1d63f376333 SHA-1: 2761db8b176d5e86c1c0624894e69c186c3b51b2 SHA-256: fca6fdde754ea54306564facfb6356c64a03a5d584c7c655807711888de8c298
162 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1566.001 Spearphishing Attachment

The sample was detected by ClamAV as Pdf.Phishing.Trojan and flagged by an ML classifier, indicating malicious intent. It contains embedded JavaScript and a link farm pointing to compromised WordPress sites and other disposable hosting, suggesting it's designed to redirect users to phishing or malware-hosting pages. The primary attack pattern involves luring users via a spearphishing attachment to a malicious PDF that executes JavaScript to facilitate further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8104

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://pixomot.ru/uplcv?utm_term=where+do+i+find+my+phone+number+on+my+phone PDF link annotation
    • https://njsolarpower.com/wp-content/plugins/super-forms/uploads/php/files/5c46b49e30416ba243e2c65545b057e7/ragukamapaxevan.pdfIn PDF document text
    • http://testsitehq.com/ckeditor-ckfinder-integration/uploads/files/5103683040.pdfIn PDF document text
    • https://t2sc.me/userfiles/gogikugiwuwabejepute.pdfIn PDF document text
    • http://hotelbasantresidency.com/uploads/kowasewebogakevavukugig.pdfIn PDF document text
    • http://studioturina.com/userfiles/files/kadujef.pdfIn PDF document text
    • http://ganteltechnology.com/system/userfiles/file/ralalirarasarimemegu.pdfIn PDF document text
    • http://duef.ru/public/file/videzexinoxukukozel.pdfIn PDF document text
    • https://mobspace.xyz/web/img/podborky/files/bekixomawerug.pdfIn PDF document text
    • http://www.korayozelguvenlik.com/wp-content/plugins/formcraft/file-upload/server/content/files/161382e3a799c6---beliwalaxufa.pdfIn PDF document text
    • https://congtydaihai.com/upload/files/vuxixivegale.pdfIn PDF document text
    • https://epponline.com/mentorfinancial/page_images/file/fegiwozutumevesi.pdfIn PDF document text
    • http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613b5099daa0a---86307471407.pdfIn PDF document text
    • https://livstyle.ro/home/livstyle/public_html/uploads/files/41021510156.pdfIn PDF document text
    • http://intproplaw.com/admin/uploads/file/nafuwunape.pdfIn PDF document text
    • http://skontrolsengineering.com/file_media/file_image/file/pagajubagew.pdfIn PDF document text
    • http://www.buildonhope.org/file/51112043024.pdfIn PDF document text
    • http://isystemlab.com/admin/ckfinder/userfiles/files/vumetagenotasovofez.pdfIn PDF document text
    • http://cameranichietsu.com/luutru/files/49448346188.pdfIn PDF document text
    • http://daieimotors.com/js/upload/files/92166112616.pdfIn PDF document text
    • https://psg66.ru/admin/ckfinder/userfiles/files/popanolexupodotu.pdfIn PDF document text
    • http://lica-mpt.it/userfiles/files/51279987338.pdfIn PDF document text
    • http://library.nesdb.go.th/ic/admin/ckfinder/userfiles/files/rujovivikig.pdfIn PDF document text
    • https://girl0229960192.com/upload/users/files/moben.pdfIn PDF document text
    • http://wahluenfty.com/userfiles/bakasagave.pdfIn PDF document text
    • 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_off0000be3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE3F 16160 bytes
SHA-256: 5ce9e780fc8aef8d6f8207b694b4afed290ff740151b7eb8998d4ade2045aa0e

Open this report in the interactive analyzer, or submit your own file for analysis.