Malicious PDF — malware analysis report

Static analysis result for SHA-256 369966fafd5fbcc2…

MALICIOUS

PDF

78.0 KB Created: 2021-09-20 01:09:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 109c63ad4987d985e64a19fc881ded15 SHA-1: 025b663370206e89618c1f57c7d6f6454a1382b9 SHA-256: 369966fafd5fbcc2b4bbc4d6d045a9bd881a541df2cf437567d2f266f27e94f4
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was identified as malicious by ClamAV, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to compromised WordPress installations or disposable hosting, suggesting a link farm designed to redirect users. The presence of these links and the nature of the hosting indicate an attempt to obscure the final destination and potentially deliver a secondary payload.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4578

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://innovad-ltd.com/userfiles/file/71909016559.pdf In PDF document text
    • http://irodaszer.lukinserv.hu/file/73181058026.pdfIn PDF document text
    • http://slmj8.com/data/userfiles/files/movopalubopa.pdfIn PDF document text
    • http://dlshixiang.com.cn/ckfinder/userfiles/files/69187605095.pdfIn PDF document text
    • https://www.sudicobank.com/ckfinder/userfiles/files/70513003811.pdfIn PDF document text
    • http://www.uppld.org/wp-content/plugins/formcraft/file-upload/server/content/files/16143cb970d954---zunemo.pdfIn PDF document text
    • http://www.cafeinca.com/img/public/contenido/file/nakamodulu.pdfIn PDF document text
    • https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d82f541c3d---48834750485.pdfIn PDF document text
    • https://khanoomhoteli.com/basefile/khanoomhotelicom/files/91557338363.pdfIn PDF document text
    • http://ydyb.com/filespath/files/20210908025457.pdfIn PDF document text
    • http://gianphoiduyloimodel.com/Images_upload/files/kaperizowubebokexuj.pdfIn PDF document text
    • https://mbamantra.com/ci/userfiles/files/28836509780.pdfIn PDF document text
    • http://yeongwonenc.com/userfiles/file/guxowarotakaxelilanav.pdfIn PDF document text
    • http://tkhomedeco.com/assets/uploads/ckedit/files/20210905000302.pdfIn PDF document text
    • http://notar-frings.de/userfiles/file/30176706112.pdfIn PDF document text
    • https://thepetrichortouch.com/wp-content/plugins/super-forms/uploads/php/files/ag9f6tanhmccj47e6gapl9kd9a/ginumetagox.pdfIn PDF document text
    • http://ediljolli.com/userfiles/files/vaxibuvozaviranolo.pdfIn PDF document text
    • http://cpviettin.com/upload/files/zeriradates.pdfIn PDF document text
    • http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613852ad32d31---tufosofanivalodir.pdfIn PDF document text
    • https://massagetheory.ca/wp-content/plugins/super-forms/uploads/php/files/78e0f9cd3ac9acb99a4b8064ce2c0021/75847942254.pdfIn PDF document text
    • http://lumieye.com/userData/ebizro_board/file/werexomolorepob.pdfIn PDF document text
    • http://officeharbor.com/pdtInfo/58028462659.pdfIn PDF document text
    • http://lexxyin.net/files/fckeditor/file/domogokemadadizowodeso.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=p4g+max+social+link+guidePDF 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_off0000ed2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED2A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001053c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1053C 19440 bytes
SHA-256: 0259b8b7ab6850e82f3867b90d66a4bdfbb93b72e047abf9d404a8fbc21309e7

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