Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab7326e841ee43f3…

MALICIOUS

PDF

63.7 KB Created: 2021-05-12 03:45:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 397827dc9247b9751f7719694d0790e9 SHA-1: 4776d8f41fb1468232404ed37fa85a7cee92e3e5 SHA-256: ab7326e841ee43f3aa39917f53d5fd0947ce525f4f36bd30e4d2d2e159acaa4a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan distribution attempt. It contains numerous links pointing to compromised WordPress sites, likely serving as a link farm to distribute further malicious content. The presence of embedded URLs and the overall structure suggest an attempt to redirect users to download additional malicious files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9536

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 http://cageart.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160921f6843cfe---winatitiliwepoker.pdf
    • https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/1608e526e19a14---lagexalaf.pdf
    • http://asokmontridental.com/userfiles/file/dumuzijeroxozokegiwetam.pdf
    • https://lawpropertyconsultants.co.uk/wp-content/plugins/super-forms/uploads/php/files/a8fhie2vfn1fs3btfoqvejmedi/tadirepidebefave.pdf
    • https://rescue.bg/wp-content/plugins/formcraft/file-upload/server/content/files/1609a6b13cedc0---dikexefugejolu.pdf
    • https://vuaship.com/wp-content/plugins/super-forms/uploads/php/files/qsi2hajgo4qhcq6s6b2558hcm0/wosejeg.pdf
    • https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/okiortov0doe49sr05sk3udarq/81639210412.pdf
    • https://leicht-spb.ru/wp-content/plugins/super-forms/uploads/php/files/c3d30bf7703970bd3326fdfa653ddc5b/95575969490.pdf
    • http://adabaskimerkezi.com/upload/file/807594492.pdf
    • https://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/b85366b6121c9e86eb7b9e392e75dd7d/19680446231.pdf
    • https://www.harasportcenter.com/wp-content/plugins/super-forms/uploads/php/files/bctv63ivp7unbs9rq051tcnbv9/sikobozoxogujini.pdf
    • https://erinmillssmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/tn6gk5j7ngn6v522asakeps6c7/masusavarexiwezarefosewe.pdf
    • http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607106a76159e---nesafokisoged.pdf
    • http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608742429d9fc---468027700.pdf
    • https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607e54150338d---51440804711.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=tere+bin+laden+movie++720p
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca23.bin
e3da1260adf3e873a1ef39b3d41fdeaa01a1e7ee2d366f1f989e7a215b5dcfea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCA23 5428 bytes
font_01_sfnt_off0000dc8a.bin
c0a8e4e3842cff0b8c94a26ae3fc6fa16e56bf799703c2364a4e07b093bea400		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC8A 9960 bytes

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