Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2762ec1fa69ce93…

MALICIOUS

PDF

78.8 KB Created: 2021-09-30 20:25:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 4280eeb2400738f12f35ce61e459a7df SHA-1: a1a3bb80049cbbe656c99020631762757701bb75 SHA-256: c2762ec1fa69ce93f5ee471f0da1e5622f5175d67dabab715f7ef86cb541f314
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and multiple external URIs, indicating malicious intent. The ML classifier and ClamAV detection strongly suggest this is a phishing or trojan PDF. The embedded JavaScript likely facilitates the redirection to malicious sites, as evidenced by the numerous suspicious URLs found within the document, some of which are part of a link farm designed to obscure the true destination.

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://archism.ru/uplcv?utm_term=avengers+age+of+ultron+2015+full+movie+download+in+tamil PDF link annotation
    • http://mikomisushiwc.com/uploads/files/55260005726.pdfIn PDF document text
    • http://carnavaldemarbella.com/Senegal_5/Content/files/userfiles/file/26199566269.pdfIn PDF document text
    • http://hertzlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/gexedobusajofasipuluz.pdfIn PDF document text
    • http://status.cz/UserFiles/File/52210412033.pdfIn PDF document text
    • http://smm-mm.com/uploads/news_file/74287077527.pdfIn PDF document text
    • http://perechen-jurnalov.ru/js/ckfinder/userfiles/files/92388475408.pdfIn PDF document text
    • http://sudeoksa.com/userfiles/file/20210920131936.pdfIn PDF document text
    • https://readxyz.com/wp-content/plugins/super-forms/uploads/php/files/13b681910e6243e64f867378adefba45/nikunararaf.pdfIn PDF document text
    • https://kristinanamaste.eu/files/91009106603.pdfIn PDF document text
    • http://cityclick.it/userfiles/files/57583391653.pdfIn PDF document text
    • http://trovas.com/userimages/zedavunagomoxunim.pdfIn PDF document text
    • http://www.europesolidaire.eu/userfiles/files/gemilopagibupizet.pdfIn PDF document text
    • http://intranet.uts.edu.co/portal/app/ckfinder/userfiles/files/51015105789.pdfIn PDF document text
    • http://tcsm62.org/uploads/news/file/44335828779.pdfIn PDF document text
    • http://kientrucphatloc.com/upload/files/76940734447.pdfIn PDF document text
    • http://turagent007.ru/userfiles/file/fibitag.pdfIn PDF document text
    • http://cudicio.it/images/file/48804958962.pdfIn PDF document text
    • http://ncteonline.com/userfiles/file/pulur.pdfIn PDF document text
    • http://ilkyoukais.com/Images/Media/files/tupoluduvixaras.pdfIn PDF document text
    • https://meesens.be/KrMee/Tekstverwerker/92594574247.pdfIn PDF document text
    • http://muzycznescyzoryki.pl/userfiles/file/11022472358.pdfIn PDF document text
    • https://ambalatender.com/upload/files/lawejudatexunijewekevuxo.pdfIn PDF document text
    • 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_off0000c1dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1DD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d9ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9EF 21212 bytes
SHA-256: 4a756fe897a77fe0d359beabfcc18d105f1ab5fa1e671d40ecad96a5e0158c30
font_02_sfnt_off00011078.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11078 11356 bytes
SHA-256: 7accdc5fee9036060b57abe8e17839a0bc8e83aa9b1429de914de6611bac633f

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