Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff700f04bf9e3e7a…

MALICIOUS

PDF

78.0 KB Created: 2021-09-07 12:23:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 5b4a5f18073c136cbcef9a6dee2b1ba6 SHA-1: cb1db3f3131d77f98e9036d86857946b8a1db554 SHA-256: ff700f04bf9e3e7ad67493270da99b2cbca2a3b37d7d845737b76733636fdebb
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV and exhibits characteristics of a link farm, directing users to multiple potentially compromised websites. The PDF structure and embedded links suggest an attempt to trick users into visiting these sites, likely for phishing or to download further malicious content. No scripts were extracted, limiting the analysis of specific execution behaviors.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4574

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://hargrovefamilyreunions.com/clients/16272/File/ratigetivajun.pdf In PDF document text
    • https://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/a9fb9a940347054a8d514ea854c66609/wimuririkejupotifafolares.pdfIn PDF document text
    • https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c27ce785ed---vaxelikiriponujog.pdfIn PDF document text
    • http://carneslaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/mepewoje.pdfIn PDF document text
    • https://hpx.com.ua/wp-content/plugins/super-forms/uploads/php/files/97769ab5110c011708c0754b92f6c631/bikewalolabinewarojewuve.pdfIn PDF document text
    • https://ascinfratech.com/clientprojects/trading/file/bapemupavidevodakizekija.pdfIn PDF document text
    • http://vibrosystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607c224aa35df---lojifabusekoze.pdfIn PDF document text
    • https://g55net.com/webpagebuilder/ckfinder/userfiles/files/dazepisaguzi.pdfIn PDF document text
    • http://chinajessie.com/seadata/data/uploads/img/file/162468971257.pdfIn PDF document text
    • http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b3dde9cc4bb---bikitubugaler.pdfIn PDF document text
    • https://www.litesourcenc.com/wp-content/plugins/super-forms/uploads/php/files/cad5390f5e685a94b8e1da730153c0de/61748989349.pdfIn PDF document text
    • http://namthangbasaltstone.com/uploads/image/files/mazikirop.pdfIn PDF document text
    • https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/547751eb01a3345709741ab950ad974b/befizowa.pdfIn PDF document text
    • http://tasarimak.com/ckfinder/userfiles/files/90913765462.pdfIn PDF document text
    • http://drstevealbrecht.com/wp-content/plugins/super-forms/uploads/php/files/4b2af7657c4b024e1e18e722f02d3127/4856886350.pdfIn PDF document text
    • http://ednak.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3a1f4bd587---domunaxibojarirasu.pdfIn PDF document text
    • http://statewideroadservices.com/clients/879378/File/14764588565.pdfIn PDF document text
    • https://www.alignerco.ca/wp-content/plugins/super-forms/uploads/php/files/17ea5719d5d0b9060f0808759bf53998/zobojoloforejutot.pdfIn PDF document text
    • http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160ace3fe17dcb---gutudu.pdfIn PDF document text
    • http://jagatjyotischool.org/jagatjyotischool/userfiles/file/73665762205.pdfIn PDF document text
    • http://lab4050.com/upload/editor/file/tokod.pdfIn PDF document text
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d61758a377---85790943127.pdfIn PDF document text
    • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160ade8c1e52cf---79149572741.pdfIn PDF document text
    • http://szsahsh.com/uploads/files/1083521313.pdfIn PDF document text
    • https://www.entornopublicitario.com/wp-content/plugins/super-forms/uploads/php/files/e740e31f0ac3992f49da422c5a8ec70a/mujutogolopetobinafamijo.pdfIn PDF document text
    • https://arhometutor.com/userfiles/file/56159247395.pdfIn PDF document text
    • http://summitremodelinginc.com/userfiles/files/15483892370.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=nk+giri+automobile+mechanics+pdf+downloadPDF 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_off0000fb6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB6D 20732 bytes
SHA-256: 241a669672d39209c1766c904b52ada20a5b4d0a77e8428b4e341bdb4cc023b2