Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a6318364adbc182…

MALICIOUS

PDF

65.3 KB Created: 2021-05-09 07:14:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 19fed4a94be2f6dc4c3098e7f53decf5 SHA-1: 05fc7c7b2f8ca997ebba8e4637a336bf4c08669f SHA-256: 8a6318364adbc182555d4e3a85aa41af9b5563b94ec16e30e60cf0ebb56605c6
154 Risk Score

Malware Insights

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

The PDF file contains numerous links to external websites, many of which are hosted on compromised WordPress sites, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8461

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://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d165e61cd4---vigolusasadojudalarazu.pdf
    • https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/b24b4ee0bd9028a1b8e896e28bdd439e/raverusejetisamexeduxavaj.pdf
    • https://www.webhisto.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1608bbcc2133cc---6150977668.pdf
    • https://amiablediamonds.com/wp-content/plugins/super-forms/uploads/php/files/dca242c7cbb87ac5f9f64e5f2ca3d96b/76601344247.pdf
    • http://frederickfollows.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608689304a77f---xapikolofaf.pdf
    • http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fd7f46d763---fuximezatunidozize.pdf
    • http://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/1ogrgh2mtk61lg923dckbnd4e2/mebobuvowamakegid.pdf
    • https://www.finestkindcharter.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074961d1a837---7460151534.pdf
    • https://lastcallslc.com/wp-content/plugins/super-forms/uploads/php/files/9143388e3037a3631f91022e0f58e52d/tisuruzolarolaribotip.pdf
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/ck7biicn87m6h33i3kv08mggm7/ketulaneze.pdf
    • http://www.stallionreadymix.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606ffad0315c7---66355679051.pdf
    • https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/5dd873da5559bcae483364bdd696682f/88857036189.pdf
    • https://amiablediamonds.com/wp-content/plugins/super-forms/uploads/php/files/0dc7524aa9df4f80eb3bc88636a3bc13/18900225048.pdf
    • https://deconkhoemanh.com/wp-content/plugins/super-forms/uploads/php/files/efri9osduje3dt06ltv8kdaipd/79415047210.pdf
    • https://accesoriosalmayor.com/images/userfiles/file/48443774154.pdf
    • http://www.lbf-cosmetics.com/website/wp-content/plugins/formcraft/file-upload/server/content/files/1608637f34055c---73703764832.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=rgbw+5050+led+datasheet
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6de.bin
b4b94562b4305c4c48ae713ccab6d4334b11807d6789d1056d97a3c127764783		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE6DE 5496 bytes

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