Malicious PDF — malware analysis report

Static analysis result for SHA-256 edbdc1934f8766ee…

MALICIOUS

PDF

72.0 KB Created: 2021-09-26 08:04:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: e707d12c82c529625a07bf60c7baf337 SHA-1: e5a6f412f65137312643e6a17208e1a49915e537 SHA-256: edbdc1934f8766eea73e182d2cf1f3293dd588f5a2be13f505227602af79257a
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs pointing to disposable domains, indicating a phishing or redirection attempt. The 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic strongly suggests this is a link farm designed to obscure the true destination. The ML classifier and ClamAV detection confirm its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://bnbtravels.com/ckfinder/userfiles/files/13885289500.pdf In PDF document text
    • http://deforma.it/userfiles/files/gubigatakidugevikuv.pdfIn PDF document text
    • http://abwgulfport.com/uploads/files/72820404403.pdfIn PDF document text
    • http://luisacortesearchitetto.it/userfiles/files/10835880024.pdfIn PDF document text
    • https://presentkompaniet.com/img/content/file/zobemabimofovaz.pdfIn PDF document text
    • https://ptogel2.com/contents/files/85049460498.pdfIn PDF document text
    • http://chupanhnoithat.vn/upload/files/teriwevegaga.pdfIn PDF document text
    • http://ohappy.org/userData/board/file/famukurewizun.pdfIn PDF document text
    • http://barcelonasixtytwo.com/userfiles/file/34827106405.pdfIn PDF document text
    • http://www.gieskestukadoors.nl/ckfinder/files/files/68289926457.pdfIn PDF document text
    • https://yensaovinastar.com/media/files/jidinurikir.pdfIn PDF document text
    • http://coaching-scolaire.net/userfiles/file/96014025072.pdfIn PDF document text
    • http://ilkyoukais.com/Images/Media/files/zoboxunapapet.pdfIn PDF document text
    • https://perfecthospital.org/ckfinder/userfiles/files/76421702293.pdfIn PDF document text
    • http://akiyastyle.com/app/webroot/js/ckfinder/userfiles/files/tuxidexiboluros.pdfIn PDF document text
    • http://matrixuniverzum.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1613b2fc0600a5---golijizapeluxi.pdfIn PDF document text
    • http://domuran.pl/files/file/junonajobunakuxivob.pdfIn PDF document text
    • http://thekitchendesignstudio.org/uploads/files/22724798760.pdfIn PDF document text
    • http://ldkxzzs.com/images/userfiles/file/83732119269.pdfIn PDF document text
    • http://kapelski.pl/userfiles/file/2763110082.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=snyder+cut+adalahPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In 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_off0000b3b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3B5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000cbc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBC7 18552 bytes
SHA-256: dc070e2be8bc6b77c8b0ef7561a5dfb7b6217b11cd5c2c4cbd52f96391f49254
font_02_sfnt_off0000fb7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB7F 10376 bytes
SHA-256: e0502e607e76765db3f3d25fa8b647da12a93fe95b0250accb578c64b2d8481e

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