Malicious PDF — malware analysis report

Static analysis result for SHA-256 7426132176b78e3a…

MALICIOUS

PDF

84.6 KB Created: 2021-06-27 11:45:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f594a88661fb017edae51862b7526229 SHA-1: 3ebbe5640141043f6d451b68847763c87d1aa762 SHA-256: 7426132176b78e3a85b56c987734c220c6ab37c2fedf37a4268e28fb3cf9c844
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many pointing to WordPress sites using form plugins, suggesting a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the nature of the link farm and the PDF's structure suggest it's intended to redirect users to malicious sites, potentially leveraging embedded JavaScript for obfuscation or redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

Heuristics 6

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=%2480+usd+to+aud
    • http://aucoindeshalles.fr/menu/file/gapafuvenulomukef.pdf
    • https://foxtailmag.net/wp-content/plugins/super-forms/uploads/php/files/d7413bde6d413cff60f0e2ab708223c1/16721964165.pdf
    • https://www.movingwithmagna.com/wp-content/plugins/super-forms/uploads/php/files/dd1b9471e711ba64e9d0230380451196/pivekifugopebumu.pdf
    • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/160bf4e2c215f3---bekobafoxorapazex.pdf
    • https://vibangthuaphatlai.net/uploads/files/80810567851.pdf
    • https://suma.ca/upload/editor/file/32311771821.pdf
    • https://roeveragri.ac.in/wp-content/plugins/super-forms/uploads/php/files/ae29622cd819d75a183ad103a0d10f7d/89395897616.pdf
    • https://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/6017c659be32e1d0ea82295c67fbe2ff/wanorotebapisorikobenono.pdf
    • https://sancarspune.com/wp-content/plugins/super-forms/uploads/php/files/5e86c58e1f1475f46058a41e2487bb3b/tikukigosujeg.pdf
    • https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3a3589cfe6---92258901874.pdf
    • http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607b16c0c1490---90438457595.pdf
    • http://tivatijapan.com/uploads/userfiles/file/gupuxepozorakofufunevu.pdf
    • https://weblative.com/wp-content/plugins/super-forms/uploads/php/files/7jqnuuaf0qe915c23qi7t2vm6d/miwobav.pdf
    • http://ivepe-elearning.gr/assets/UserFiles/mainHome/file/11739905798.pdf
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609ace603aff1---ziwubaxelubiluzokag.pdf
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d0527d021b0---45611198654.pdf
    • https://freedomhypnosisnyc.com/wp-content/plugins/super-forms/uploads/php/files/be2627b39fb248f94668469c7cb22854/teresotazam.pdf
    • https://www.northernillumination.com/wp-content/plugins/super-forms/uploads/php/files/a38df49249f51d39579648d3481ceef8/wanokivomudabez.pdf
    • https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160851e446e75d---50727291698.pdf
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/62e451d846db1c7ce919e323d99b7cee/lelibagavisuligapig.pdf
    • http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/160d6c4b35d322---50000668830.pdf
    • http://aivieksteslaivas.lv/userfiles/file/44824583380.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea6e.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA6E 16792 bytes
font_01_sfnt_off00010280.bin
01a8523f07a3b7c99c118a41b827324d1d0b362034f8a16fd83c7b84e9b83682		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10280 16856 bytes
font_02_sfnt_off00012e8f.bin
24b4a6b42eba75525f97822e3fd3a6715c468205f3cdfe1ce63b505ebcc30685		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12E8F 10308 bytes

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