Malicious PDF — malware analysis report

Static analysis result for SHA-256 24eaa8111b880bfe…

MALICIOUS

PDF

243.1 KB Created: 2021-07-21 15:43:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: aae057f9400c4f4d810691876d078aec SHA-1: 8d927cdb3192e8192adec990880b2d30e04ab85f SHA-256: 24eaa8111b880bfe9834fe18cf5ac35b7e3276469397213173babfa6acb7b478
124 Risk Score

Malware Insights

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

The PDF document was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous links, many pointing to compromised WordPress sites, suggesting an attempt to redirect users to malicious content. While no scripts were explicitly extracted, the PDF structure and embedded links indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9122

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://alshaabcoop.com/userfiles/file/41119058276.pdf In PDF document text
    • https://europeancustomtailor.com/wp-content/plugins/super-forms/uploads/php/files/8c230cf25c110a050d27314623d9a6dc/54286182389.pdfIn PDF document text
    • http://www.franklinwebdesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099efe0c7c84---terizotavoxafefuka.pdfIn PDF document text
    • http://jockmurray.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094dad0a40c7---76539796080.pdfIn PDF document text
    • https://psiakocky-potisk.cz/webpagebuilder/ckfinder/userfiles/files/nudatukitososikozufe.pdfIn PDF document text
    • https://rebel-guitars.com/wp-content/plugins/super-forms/uploads/php/files/c8c7f9afce8b83a4820c5bd281ed088d/34569516594.pdfIn PDF document text
    • http://leaguengn.com/userfiles/file///4379434789.pdfIn PDF document text
    • http://funagamex.vn/PhuongNamGroup/userfiles/files/tezupuma.pdfIn PDF document text
    • http://luvnchrlysenglishtoys.com/clients/861429/File/ligim.pdfIn PDF document text
    • https://amiablediamonds.com/wp-content/plugins/super-forms/uploads/php/files/954eef70b470aca5827c0a4bd4ffb038/46332255198.pdfIn PDF document text
    • https://giustofiori.it/file/20920827275.pdfIn PDF document text
    • https://cullinanconstruction.com/wp-content/plugins/super-forms/uploads/php/files/sttvvds67k5f3lsklo2mqmpmn6/wujavikuduluga.pdfIn PDF document text
    • http://villaturri.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078c3b3393c3---3470639893.pdfIn PDF document text
    • http://wu-pao.com/upfiles/editor/files/sijeguwifotulawutax.pdfIn PDF document text
    • http://neodev.space/wp-content/plugins/formcraft/file-upload/server/content/files/160c5ed958bbd3---sivamimurudixi.pdfIn PDF document text
    • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/c9242089747d699f0ca5bcbbe7442743/bojepelurifika.pdfIn PDF document text
    • http://haniltm.kr/upfiles/editor/files/jopeb.pdfIn PDF document text
    • https://hoalavender.net/upload/files/71971798039.pdfIn PDF document text
    • https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608f805164615---gununekibigu.pdfIn PDF document text
    • https://autosaloncenter.com/uploads/file/41371399851.pdfIn PDF document text
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb260d919e---buwubaliwepenigijazuxajus.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=king+henry+viii+of+englandPDF 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_off0003a08d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A08D 18204 bytes
SHA-256: ab9cbc9874a481e094f46fc7c67d3efa2172a382d19d7161657707d415b599f1

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