Malicious PDF — malware analysis report

Static analysis result for SHA-256 1da57e4693cc87c6…

MALICIOUS

PDF

71.0 KB Created: 2021-06-09 06:26:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 60fc1a9b1cc5b9d0d35b4f3e0688715e SHA-1: 5b7f0da6f408b08151a6ce34e7e537c4a8c87d58 SHA-256: 1da57e4693cc87c609fdfe7d233fe62bf5419dec3b2d06926febf9ff6a6bc0d8
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links, many pointing to compromised WordPress sites and disposable hosting, suggesting a link farm or phishing lure. The ClamAV detection and ML classifier indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7495

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 https://cructi.ru/uplcv?utm_term=upsc+optional+subject+sociology+syllabus
    • http://amctop.com/board_data/editor_img/file/202105181750.pdf
    • http://hurtglass.pl/upload/file/kezolulenefa.pdf
    • http://baigeleather.com/userfiles/file/94843719889.pdf
    • http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/909c6065c512708a71e0e2f469df866f/gonuwibiwanonif.pdf
    • https://master.plus/wp-content/plugins/super-forms/uploads/php/files/69a7621c2d70d1c126ca54a169a7b2a2/xuwaranafimaka.pdf
    • https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/rppk7gp0ad0q3srqe67qq8q866/7288455715.pdf
    • https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/1dcq7li3r0n3oajl5o7s4ksqj5/junup.pdf
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fedd30856d---23898649765.pdf
    • http://omonetach.pl/foto/ilustracje/file/5862613652.pdf
    • https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/16097485b28352---futamigamaz.pdf
    • https://ctsgroups.asia/images/file/jumaximuke.pdf
    • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c5cd6282c9---puxez.pdf
    • http://bestbuyfromindia.com/userfiles/file/70838814894.pdf
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/1606eae3fcbb9c---44199476064.pdf
    • http://msinziniering.com/userfiles/file/6915516421.pdf

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