Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ce0082876b97a55…

MALICIOUS

PDF

98.4 KB Created: 2021-08-02 23:03:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-03
MD5: d2d723ff1b7eb45c1fd5bf52463c78b8 SHA-1: 7fafdde10c02495b0b70920da8712d9ee0c3eaa8 SHA-256: 2ce0082876b97a552b286ca2fb32f649cc386695b3713db88191fc90e7f3818f
154 Risk Score

Malware Insights

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

The PDF file was identified as malicious by a ML classifier and ClamAV, specifically flagged as Pdf.Phishing.Trojan. Heuristic analysis revealed it functions as a link farm, with numerous URLs pointing to compromised CMS upload storage and disposable hosting. These links are likely intended to lure users into downloading further malicious content or visiting phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9096

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 http://clasesholandes.com/userfiles/file/golinagikusimisojepo.pdf In PDF document text
    • https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608443f092d54---vifapevuvadivuxuvijoman.pdfIn PDF document text
    • http://morard-mcf.fr/data/Files/jadodutobenoxosolexut.pdfIn PDF document text
    • https://adasms.fr/userfiles/file/wemasuxisizagufebaremadud.pdfIn PDF document text
    • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f93f473c1b---badofagesares.pdfIn PDF document text
    • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/16091c20e22a60---gusanivexezakigubabif.pdfIn PDF document text
    • http://www.alexgis.com/siteuploads/editorimg/file/butidajuzed.pdfIn PDF document text
    • http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/160837ae5809af---34147691667.pdfIn PDF document text
    • https://wietsevoermans.nl/ckfinder/userfiles/files/16163454400.pdfIn PDF document text
    • https://drsubhashawale.com/ckfinder/userfiles/files/37956820154.pdfIn PDF document text
    • http://shinies.ru/img/lib/file/silukutofivanunidekipawes.pdfIn PDF document text
    • http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c29652918ef---vukejirekukoradodirojule.pdfIn PDF document text
    • http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/160ee51b2d0136---dikopanoza.pdfIn PDF document text
    • https://deitratech.com/userfiles/file/lezazenujitedaxasejexoken.pdfIn PDF document text
    • http://cn-polylysine.com/d/files/96941490735.pdfIn PDF document text
    • http://skyline64reunion.com/clients/e/ec/ec378541aa9b73e2b99de5ca5545ec21/File/kisesole.pdfIn PDF document text
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/16092e0fef12ca---jujomi.pdfIn PDF document text
    • https://srmhospitalities.com/images/bulk_images/files/90116694720.pdfIn PDF document text
    • http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/411595589da64bfad513f42a6b2a06e4/21353759986.pdfIn PDF document text
    • https://aristi-trap.com/upload/users/files/42288831368.pdfIn PDF document text
    • https://chp-travel.ir/data/file/12676378804.pdfIn PDF document text
    • http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a06b19d1147---rukefosiwofigifazolim.pdfIn PDF document text
    • https://iwnta.com/userfiles/file/lamuz.pdfIn PDF document text
    • http://rustproofingottawa.com/userfiles/file/14900169686.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=counseling+theories+chart+pdfPDF 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_off00017469.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17469 11028 bytes
SHA-256: eb19a2bd1b97ac074aaa4557cc9f46128dddc37bbf59e8c43f8538ab064b1e42

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