Malicious PDF — malware analysis report

Static analysis result for SHA-256 415c267808ec315b…

MALICIOUS

PDF

62.2 KB Created: 2021-09-17 06:55:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: bc0ab0c1f174ac9a2d580d66d82d20ff SHA-1: 7e5f051d478caffb67862c7908373aa1b2caff77 SHA-256: 415c267808ec315be9f571f80d89caa98caf0216fb2ef87c2a153e40a7dd8169
124 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic specifically points to the document acting as a link farm, directing users to numerous distinct hosts. This behavior is consistent with phishing or malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5277

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
  • 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://pacientes.quiroser.com/UserFilesQUI/file/furomekeka.pdf In PDF document text
    • https://stollerco.com/testingsites/advantage_aviation/assets/media/file/gezizemagode.pdfIn PDF document text
    • https://hanomanberjaya.com/contents/files/belobugimuxopumilitone.pdfIn PDF document text
    • http://copy-office.it/userfiles/file/11626166890.pdfIn PDF document text
    • http://computer-rudolstadt.de/upload/file/nedurobisodog.pdfIn PDF document text
    • http://haiannweb.com/uploads/files/41567010287.pdfIn PDF document text
    • http://advocaatindex.nl/images/uploads/298854897.pdfIn PDF document text
    • http://cee1968.com/ckfinder/userfiles/files/xededova.pdfIn PDF document text
    • http://ever0036.com/assets/uploads/ckedit/files/20210906150334.pdfIn PDF document text
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/1612ee0b979f0b---24250316593.pdfIn PDF document text
    • https://dichvuhappyhouse.com/upload/files/86817728080.pdfIn PDF document text
    • http://xboxheerlen.nl/userfiles/file/tajimuveruzapa.pdfIn PDF document text
    • http://jtravel.clickis.kr/FileData/ckfinder/files/20210902_C84110E515F5D190.pdfIn PDF document text
    • https://marikakozmetika.hu/editor_up/zogepa.pdfIn PDF document text
    • http://www.recko.ru/ckfinder/userfiles/files/kenapisepibolilarojile.pdfIn PDF document text
    • http://security-m.jp/tool/images/file/vudujerogepijamovuxi.pdfIn PDF document text
    • http://espwireless.net/uploads/file/87302087776.pdfIn PDF document text
    • http://cesarrodarte.com/userfiles/file/53659256008.pdfIn PDF document text
    • http://shiokuda1.com/contents/files/92615627469.pdfIn PDF document text
    • https://trungtamgiasuhcmmq.com/uplaod/quangtri/files/27948898191.pdfIn PDF document text
    • http://zensushialiso.com/uploads/files/bunel.pdfIn PDF document text
    • http://dlabiura.kbo.pl/ckfinder/userfiles/files/23644786486.pdfIn PDF document text
    • http://oembag.com/uploads/files/202109140914463587.pdfIn PDF document text
    • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16141e01c79c08---86591535716.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=long+words+that+start+with+cPDF 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_off0000afa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFA7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000c7b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7B9 15288 bytes
SHA-256: 5029a24d2b151d7733aa345e83fe69d7c8b302a060dee13e0f72e1339f11dc6a

Open this report in the interactive analyzer, or submit your own file for analysis.