Malicious PDF — malware analysis report

Static analysis result for SHA-256 00e106bcf9d93648…

MALICIOUS

PDF

76.1 KB Created: 2021-09-15 21:02:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 25515a86f5661464e7c50376d3d499c1 SHA-1: b17e7d61a3b460d07c50891a88fcc78facb539e7 SHA-256: 00e106bcf9d93648714ec22102a25f4d8de5b84e6cdc30d341e01221f9cf591d
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as a malicious PDF by ClamAV and an ML classifier. It contains numerous embedded URLs pointing to external sites, some of which are identified as part of a link farm on disposable hosting. The PDF's structure and the presence of external links suggest it is intended to redirect users to malicious websites, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5732

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://cructi.ru/uplcv?utm_term=gta+5+casino+cheats PDF link annotation
    • http://ladyvenus.it/userfiles/files/65412608124.pdfIn PDF document text
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140a3ab71a5c---voporezezukakediz.pdfIn PDF document text
    • http://recit-de-vie.fr/userfiles/file/dowojizidat.pdfIn PDF document text
    • http://anthonyvienna.com/sites/default/files/file/ritaxuberuforero.pdfIn PDF document text
    • https://www.gryf-wet.pl/ckfinder/userfiles/files/vakiruva.pdfIn PDF document text
    • http://garant-fond.ru/ckeditor/ckfinder/userfiles/Images/files/26555859550.pdfIn PDF document text
    • http://sun-green.be/ckfinder/userfiles/files/fenagadujasawurawir.pdfIn PDF document text
    • https://assignmentmart.com/ckfinder/userfiles/files/zemitepidulupovedamuwita.pdfIn PDF document text
    • https://muacash.com/webroot/img/files/825629494.pdfIn PDF document text
    • http://familie-schiecke.de/images/file/54940961873.pdfIn PDF document text
    • https://activepymes.com/pub/file/xagasofito.pdfIn PDF document text
    • https://101doctor.com/uploads/ckfiles/files/61344f02580fd.pdfIn PDF document text
    • https://sakesushimn.com/userfiles/files/nobufizojezegofo.pdfIn PDF document text
    • http://coyada.com/up_images/up_images/gutekatizivobesa.pdfIn PDF document text
    • http://alpha-cp.com/userfiles/file/24862030482.pdfIn PDF document text
    • https://marlin-aquarium.ru/ckfinder/userfiles/files/pofofatigululo.pdfIn PDF document text
    • http://www.britocunhaadvocacia.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/161415425e9c80---fujaza.pdfIn PDF document text
    • http://ahzycw.com/upload_fck/file/2021-9-13/20210913193359702953.pdfIn PDF document text
    • http://stepasidemedical.com/images/uploads/file/4364077021.pdfIn PDF document text
    • http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613100fa6b731---36894389489.pdfIn PDF document text
    • http://sure2trips.com/bot/ckfinder/uf/files/tigimakovakimafisim.pdfIn PDF document text
    • 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_off0000e153.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE153 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f965.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF965 18128 bytes
SHA-256: 1a6984a46103c9d3a8aed686b6e2888014852ddd0164f331e1615b56ddf34873

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