Malicious PDF — malware analysis report

Static analysis result for SHA-256 959e0398df334429…

MALICIOUS

PDF

90.1 KB Created: 2021-06-27 00:36:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 30f6c961ffc5a10d38bea68bfdae09c4 SHA-1: 8d71c068c4b1461747dbce45458f7ff04e11e978 SHA-256: 959e0398df33442950506271707dbd93fd7dc1ffc4c7f4c850a0df784ce3791b
124 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to compromised WordPress upload directories and disposable domains. This structure suggests the document is designed to lure users into clicking these links, potentially leading them to phishing sites or further malware downloads. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly supports this phishing and trojan delivery intent.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4296

Heuristics 5

  • 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.
  • 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://lawrence-spruill.com/clients/42275/File/diwikiwabalakexovejubixe.pdf In PDF document text
    • http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2e17a9a7b8---kifavoxokimevotel.pdfIn PDF document text
    • http://scissortailfarms.com/wp-content/plugins/formcraft/file-upload/server/content/files/160986c6ac14bf---34490248051.pdfIn PDF document text
    • http://www.consorcio.edu.pe/wp-content/plugins/formcraft/file-upload/server/content/files/160a8e767c1cda---xexaredakupuw.pdfIn PDF document text
    • https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/1608e2465f3148---jawolize.pdfIn PDF document text
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/160b012f8c1ec7---10458167191.pdfIn PDF document text
    • http://matstravel.ru/userfiles/file/lopatawamoderowopepev.pdfIn PDF document text
    • https://laser123.com/geektic/files/56276815158.pdfIn PDF document text
    • http://imailbox.nl/images/uploadedimages/file/51415839714.pdfIn PDF document text
    • http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afbfda205cc---karamabamoz.pdfIn PDF document text
    • http://bergfin.se/wp-content/plugins/formcraft/file-upload/server/content/files/160bfd8c58d7db---6251823606.pdfIn PDF document text
    • https://www.kngroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6470fabf35---63245728264.pdfIn PDF document text
    • https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/f7156a952db326961222bcb17d1c6fea/5875810150.pdfIn PDF document text
    • https://consultingexpert.eu/fckeditor/userfiles/file/jotapalogenupajexobubesol.pdfIn PDF document text
    • http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/16091339fbdca1---xiwuneluwul.pdfIn PDF document text
    • http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/160977dd9263da---97454713340.pdfIn PDF document text
    • https://centrosteadycam.it/wp-content/plugins/super-forms/uploads/php/files/a986e7c81dc87f18c10b034a2f1e7502/90464175769.pdfIn PDF document text
    • https://airshow-bg.com/file/lonopuparopijuxolepapuma.pdfIn PDF document text
    • https://www.treehousecare.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607e9f6e35d37---83929721749.pdfIn PDF document text
    • http://kingalbertltd.com/uploadedfiles/file/60081102802.pdfIn PDF document text
    • http://beerskiboot.com/img/upload/file/27429421449.pdfIn PDF document text
    • http://brothersaluminium.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/160a0fe2788d02---bixuku.pdfIn PDF document text
    • https://easy2ticket.com/upload/files/zirojani.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=autoview+2015+manualPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010c80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C80 10664 bytes
SHA-256: 55d3ca6232d8d523caef4aac49d432e16bb20cf53889071b38561bd102290c6f
font_01_sfnt_off00012519.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12519 17128 bytes
SHA-256: 687e5d5ed49663d1fbc663c77a81c5f4ebf5136f39f0bc16349667514d85a883
font_02_sfnt_off00015177.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15177 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1