Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ed5b37b192ee2e3…

MALICIOUS

PDF

79.0 KB Created: 2021-09-12 00:58:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c787117b366485df25a70b13a40b6184 SHA-1: fd6cff014b59a972717374a67f5df3875852d220 SHA-256: 9ed5b37b192ee2e320a4d04b630c4dfc8dc3f7b86a1529b4082fcac7bcf9360c
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is a common technique for exploiting PDF vulnerabilities or redirecting users. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a large number of external links, suggesting a phishing or content-luring scheme. ClamAV detection as 'Pdf.Phishing.Trojan' further supports the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://simorgh.it/uploads/file/24880585184.pdf
    • https://girilawfirm.com/content_files/files/dixajepawudafoxawasoniwav.pdf
    • http://telecycling.info/files/file/zudagawiburu.pdf
    • http://sanxuatbanthinghiem.org/app/webroot/uploads/files/lemixejitulo.pdf
    • http://swiss-ex.com/images/blog/file/gogozim.pdf
    • http://garageanything.com/js/upload/files/xumeziwotibotetosogiz.pdf
    • http://fantalife.nl/userfiles/file/kinuposiwijeg.pdf
    • http://sgo-bage.com/public/files/files/matagis.pdf
    • https://mimpishio2.net/contents/files/33002568670.pdf
    • https://vanphongphampmc.com/upload/files/90486003956.pdf
    • https://inprovitcaribe.com/ckfinder/userfiles/files/gibeliga.pdf
    • http://redondoclassicburger.com/uploads/files/96472914073.pdf
    • http://www.introspekta.si/ckfinder/ckeditor_uploaded_files/files/boris.pdf
    • http://amdind.com/userfiles/file/navafos.pdf
    • http://hoadondientu-ptp.vn/images/ckeditor/files/6962656194.pdf
    • http://npxbyy.com/wang3_3_10_27/Upload/Upload/file/202194160396792.pdf
    • http://kuresi-kaitori.com/upload/content_pic/files/puwegi.pdf
    • http://xn----gtbercbfedtm3b.xn--p1ai/admin/ckfinder/userfiles/files/wojoxalexatonutefe.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=top+wifi+hacking+software+for+android
    • 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_off0000cfc2.bin
6da3d12e33d9210306c662e0a8849a9c54da451d601036fc8f9f0e4a7a2f5d30		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCFC2 17668 bytes
font_01_sfnt_off0000fd87.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD87 16792 bytes
font_02_sfnt_off0001159e.bin
8b0deb123ed6a3492a9f70a6393f2815d00dcf26ffe27f5efa5bc4ba21c82d70		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1159E 10992 bytes

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