Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe5eec4b802ed179…

MALICIOUS

PDF

68.5 KB Created: 2021-10-01 01:18:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: 690d09cca4da58c9a97293017c9b8ab2 SHA-1: dee1573b9d5e1b889e6cc6f61251d4c59f2f21a0 SHA-256: fe5eec4b802ed179193baa5540cb34cbe8acaa700d1c6e49d1223ede81c72aa3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous external URLs, many of which point to compromised CMS uploads or disposable hosting, indicating a link farm designed to redirect users. The presence of these links suggests the primary purpose is to lead users to malicious websites, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5040

Heuristics 5

  • 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.
  • 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 https://garglob.ru/uplcv?utm_term=mug+life+android PDF link annotation
    • http://vpsystem.com/files/fck/75208008068.pdfIn PDF document text
    • https://dispomydeal.com/wp-content/plugins/super-forms/uploads/php/files/d28fdaea066500b7b4040038deb94c07/xupep.pdfIn PDF document text
    • https://bazab.ru/ckfinder/userfiles/files/41558401640.pdfIn PDF document text
    • https://ceccargiurgiu.ro/userfiles/file/54881756819.pdfIn PDF document text
    • http://americasbestwingsbeltsville.com/uploads/files/zikotuderej.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/cf3d58365d8b420a74d908ccf1c73d69/kibevanusunosikupufat.pdfIn PDF document text
    • http://alpha-th.com/userfiles/file/kifisejiguvopalopiboleko.pdfIn PDF document text
    • https://afritransport.com/app/webroot/files/file/35295788081.pdfIn PDF document text
    • http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1613ca84a4d6a6---wilev.pdfIn PDF document text
    • http://burchiellati.com/file_fck/file/86609068961.pdfIn PDF document text
    • http://www.corazondelsol.es/ckfinder/userfiles/files/35341798822.pdfIn PDF document text
    • http://trufeel.com/ckeditor/ckfinder/uploadfile/files/71996888359.pdfIn PDF document text
    • http://ge-mak.com/files/35302681664.pdfIn PDF document text
    • http://benly-carson.com/product/files/21541338598.pdfIn PDF document text
    • http://cck-brno.cz/ckfinder/userfiles/files/28812540991.pdfIn PDF document text
    • http://xn----ctbguteehkho5h.xn--p1ai/ckfinder/userfiles/files/dunulitisixudexibudedoren.pdfIn PDF document text
    • http://islaminkiel.de/webmisr/uploadwebmisr/file/82362334505.pdfIn PDF document text
    • http://himalayakebab.irafbrothers.com/shipinc/userfiles/files/bilinijokevoxixonu.pdfIn PDF document text
    • http://medtravel.pro/images/hand_uploaded/files/8288307569.pdfIn PDF document text
    • https://www.mybizwebsites.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614491793e5b0---vawegib.pdfIn PDF document text
    • http://myagreement.com/UserFiles/file/gorijavumevutebu.pdfIn PDF document text
    • http://mimarkamilozkartal.com/userfiles/files/53934240595.pdfIn PDF document text
    • https://negaratoto.com/contents/files/65391340104.pdfIn PDF document text
    • http://krindustria.com.br/site/wp-content/plugins/formcraft/file-upload/server/content/files/16155b9acd51ec---luwunebu.pdfIn PDF document text
    • 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_off0000b722.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB722 10356 bytes
SHA-256: d738248d9e56e6d12c65dda78849d244cba51fdfa31b3bf29b968cd8504634cf
font_01_sfnt_off0000ce5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE5D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e66f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE66F 18328 bytes
SHA-256: e58a28f25b1ce894c301a21ce873d6b354b98b44dd7bd298643524f5df51e6ee