Malicious PDF — malware analysis report

Static analysis result for SHA-256 92462b9654bc56a9…

MALICIOUS

PDF

85.7 KB Created: 2021-09-10 09:06:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: fd2dd2d31d038ce68a972d8b9767d68b SHA-1: 4474f8be3cb4f8a3e72e54aa9e62abfee791ee4c SHA-256: 92462b9654bc56a9f7a268a99dfc42df188dace0aa277c6905e6f9ee67eb9843
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple heuristics as malicious, including a link farm pointing to compromised CMS uploads and disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URLs suggest the document is designed to redirect users to potentially harmful content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://tavfelugyelet.megujuloenergiapark.hu/admin/ckfinder/userfiles/files/namapemuxazejowajidaseb.pdf In PDF document text
    • http://cartopack.com/Images/file/vanojifufovug.pdfIn PDF document text
    • http://ceskylakros.cz/userfiles/file/25053413191.pdfIn PDF document text
    • http://gr-chem.com/upload/files/61950366241.pdfIn PDF document text
    • https://burragebrothers.com/demo/jolie/beta/userfiles/files/76119376580.pdfIn PDF document text
    • https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613882a5040f7---vogewakukajoveki.pdfIn PDF document text
    • http://cuanhuaabshanquoc.vn/files/33530503639.pdfIn PDF document text
    • https://propactionvehiclesuk.tv/userfiles/files/xajigok.pdfIn PDF document text
    • https://alismobile.co.uk/wp-content/plugins/super-forms/uploads/php/files/bd7fd585ecfdfb81e99bbe9ab32f460d/gowovenobebiwubako.pdfIn PDF document text
    • http://alptw.com/images/files/kapevuribo.pdfIn PDF document text
    • http://lavalnerina.com/userfiles/file/vativovi.pdfIn PDF document text
    • http://donaldnathanlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/53935073495.pdfIn PDF document text
    • https://rt-totaalafbouw.nl/userfiles/file/31620461680.pdfIn PDF document text
    • https://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/4fa51e4a164e5b5a6c774c333742ff35/tavewutix.pdfIn PDF document text
    • https://sindhuinvestment.com/ckfinder/userfiles/files/runuriga.pdfIn PDF document text
    • http://immobilieninvestors.com/userfiles/file/jewasavulidanagijef.pdfIn PDF document text
    • http://hotel-gerard-dalsace.com/upload/document/35107786785.pdfIn PDF document text
    • http://bdnchem.com/upload/files/jejekagoromi.pdfIn PDF document text
    • http://autosvilar.com/uploads/ckfinder/files/8814673894.pdfIn PDF document text
    • https://xn--b8qxb801j.tw/upload/files/wozuxizixuvokodisugu.pdfIn PDF document text
    • http://christschoolblr.in/userfiles/file/zurojomomugomujiruvik.pdfIn PDF document text
    • http://ambulanceservice.pl/userfiles/file/31355615599.pdfIn PDF document text
    • https://www.frontierexim.com/wp-content/plugins/super-forms/uploads/php/files/0hu2eq9oq5f7lq6ucggfrei510/werebogofufa.pdfIn PDF document text
    • http://ymmicro.com/files/files/11194340703.pdfIn PDF document text
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137f9a2e7fbe---18217384749.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=server+apps+for+androidPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED09 10488 bytes
SHA-256: 2214298efd7063932edbab40cce57207bf5de22103f692cb605a2273de7cc347
font_01_sfnt_off000104fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104FC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011d0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D0E 17180 bytes
SHA-256: 2f50dae18f8f17d8452a11b963c75511d3c0b51671457b683db0f3193ebc7495

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