Malicious PDF — malware analysis report

Static analysis result for SHA-256 0de87c6625278088…

MALICIOUS

PDF

77.8 KB Created: 2021-08-03 00:31:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 96c30d1281be53713aba50d8f4bdd941 SHA-1: 4c8b7a1bee4b6621b25258a93a6742f8ce92490c SHA-256: 0de87c662527808810a9d9341a45b3677f41d506173c0a48064d8d028d70b281
154 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics as containing a link farm pointing to compromised CMS uploads, indicating a likely phishing or malware distribution attempt. ClamAV also detected it as a phishing trojan. The presence of numerous links on disposable hosting further supports a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7561

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://mobilesamara.com/img/files/file/64182739861.pdf In PDF document text
    • https://stewsites.com/wp-content/plugins/super-forms/uploads/php/files/0721588dee9031b01e7ea9c83728893f/3480305583.pdfIn PDF document text
    • http://chickenwild.com/upload/contents/images/images/42611887468.pdfIn PDF document text
    • https://lwim-ouargla.dz/ar/files/72165961526.pdfIn PDF document text
    • https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/78b1db20c70357b01cbca73d57769c0d/dejereropuzebekij.pdfIn PDF document text
    • http://falconartistmanagement.com/ckfinder/userfiles/files/23784004744.pdfIn PDF document text
    • http://acecaalcoy.com/userfiles/file/xijanoletesinaxerodutenam.pdfIn PDF document text
    • https://journeypeople.cc/wp-content/plugins/super-forms/uploads/php/files/aff93289cd7ca30ded4fae2601284e91/89839237649.pdfIn PDF document text
    • http://www.klimavill.com//data/editorfile/83501696275.pdfIn PDF document text
    • https://sanagustin.cl/files/33353386258.pdfIn PDF document text
    • https://eandjfamilyhealthcenter.com/wp-content/plugins/super-forms/uploads/php/files/420a59fcd254dbfd66ddf4489465d2bb/ditudemopufunitejedelaza.pdfIn PDF document text
    • http://lapawan15.com/shop/fck_file/file/bilanod.pdfIn PDF document text
    • http://www.orhancoskun.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d2303290dd---25113161588.pdfIn PDF document text
    • https://360mart.net/uploads/files/negasezuj.pdfIn PDF document text
    • https://webupdate.ca/wp-content/plugins/super-forms/uploads/php/files/8p3n5klu3hfatsdb36bsj595e4/37090367337.pdfIn PDF document text
    • http://ganan10.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160fdaa65e8fc8---49895097441.pdfIn PDF document text
    • http://jrpst.pl/userfiles/file/98994747189.pdfIn PDF document text
    • https://canvasations.com/wp-content/plugins/super-forms/uploads/php/files/rqtu2ijrqn5jf4iddkt35h4454/xijosizu.pdfIn PDF document text
    • http://dagmare.de/userfiles/file/64260184403.pdfIn PDF document text
    • https://aartipalette.com/userfiles/file/60146520698.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adccb582abb---10875420117.pdfIn PDF document text
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/waxikotuzixitokejidu.pdfIn PDF document text
    • http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/160dab5e6c20cf---ninedirekim.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=simon+vs+the+homosapien+agenda+movie+vs+bookPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f664.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF664 11068 bytes
SHA-256: 3464a4155d66fa23e9da253ec459180865e163d014ac43009299f269d6ee7139
font_01_sfnt_off00010f8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F8C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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