Malicious PDF — malware analysis report

Static analysis result for SHA-256 baf1b4c197e007dc…

MALICIOUS

PDF

84.5 KB Created: 2021-09-03 03:10:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 9d89f2ffcd0b0169900d66867ddb63f1 SHA-1: 865fd8f67360a97217caafbfe15c21280da51dcf SHA-256: baf1b4c197e007dcce2a99158e7a04f0cfc5ca8ad5964e4571bb0f7d5a69f6d1
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is detected as a malicious PDF by ClamAV, indicating it's likely a phishing or malware delivery attempt. Multiple heuristics identify it as a link farm pointing to compromised CMS uploads and disposable hosting, suggesting an effort to obscure the final malicious destination. The embedded URLs are designed to redirect users to potentially harmful sites, likely to download further payloads or steal credentials.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3119

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 https://huntic.ru/uplcv?utm_term=quantum+teleportation+and+entanglement+pdf PDF link annotation
    • https://ckmusicdesign.nl/userfiles/file/12100398084.pdfIn PDF document text
    • https://www.lowdoc-loans.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a9c4daa88c8---zaduwox.pdfIn PDF document text
    • https://zweiund40.com/wp-content/plugins/super-forms/uploads/php/files/kq6u38tg40qg3j9b0esu1mhkg9/63275232537.pdfIn PDF document text
    • http://autobedrijvenindex.nl/images/uploads/41730008970.pdfIn PDF document text
    • http://airfa.it/userfiles/file/56494494677.pdfIn PDF document text
    • https://peilimineko.com/userfiles/file/79588660328.pdfIn PDF document text
    • http://icoenergia.com/userfiles/files/43137609634.pdfIn PDF document text
    • http://chinahongji.com/d/files/30534472767.pdfIn PDF document text
    • http://www.mmd.ntou.edu.tw/ckfinder/userfiles/files/vefevoz.pdfIn PDF document text
    • https://noukos.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160854ef2a5177---93112663126.pdfIn PDF document text
    • http://1984wnhs.com/clients/2/25/250e0aaa51dad033202e6c34d8602b4d/File/84085456627.pdfIn PDF document text
    • http://sichera.eu/userfiles/files/76494773514.pdfIn PDF document text
    • http://odontoflash.eu/userfiles/files/84310687919.pdfIn PDF document text
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/9ei3f0ra0sgh97aojr9r8qndm2/rimiwot.pdfIn PDF document text
    • https://www.bocamvigliesrooms.com/wp-content/plugins/super-forms/uploads/php/files/24f2c6489f00d3478f86a09226fcc6bd/dazaluwizabega.pdfIn PDF document text
    • https://best-label.com/upload/files/31710370932.pdfIn PDF document text
    • https://bd-sokolovska.eu/userfiles/file/madewogoxixividikobajuwux.pdfIn PDF document text
    • http://beiwendq.com/userfiles/file/kokam.pdfIn PDF document text
    • http://izdepskifamily.com/clients/1/1a/1adacdf247316bc4617b3617d965acc7/File/fabupowaj.pdfIn PDF document text
    • https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/bh4fq7h2e63ikd37ovq32j5fh6/zenefapifatunadajibewemus.pdfIn PDF document text
    • http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160f8d38447ba5---lezopejuzovexitotamel.pdfIn PDF document text
    • http://fujiya-burbank.com/uploads/files/24479093465.pdfIn PDF document text
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/7v0k862n7ffem8siqlr0k55vbg/96515975951.pdfIn PDF document text
    • https://gulyaskantin.hu/uploads/frontend/files/13523475849.pdfIn PDF document text
    • https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/498b1597be2cb7283dd41c9abce49680/dotepebuxuvebetewose.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_off00011cac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CAC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000134c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134C3 10832 bytes
SHA-256: 323f1774233cd415a8eee07a945c9531c22e44f6046a7792c070b407059cd0d6