Malicious PDF — malware analysis report

Static analysis result for SHA-256 56e04180812212cb…

MALICIOUS

PDF

78.1 KB Created: 2021-09-19 23:54:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ea54feb2262769dddcf894998dc2160b SHA-1: 98652aeedf39a3f861bedac2d0d21cc9180d49bb SHA-256: 56e04180812212cb057e6049be67c1059232b7de0980179b2d8cd23d6af0f1ca
132 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript, which is a common technique for exploiting PDF vulnerabilities or redirecting users to malicious sites. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic and numerous unknown URLs suggest a phishing or spam campaign. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7990

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • 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://komodovo.ru/upload_picture/64326977770.pdf
    • https://www.aledrukujemy.pl/ckfinder/userfiles/files/sukimafosudono.pdf
    • http://ainut.fi/userfiles/file/wasiwoluwuvimili.pdf
    • http://tcsklife.com/filespath/files/20210907005926.pdf
    • http://thanhnhomdinhhinh.net/uploads/files/58123458521.pdf
    • http://copingconversations.com/userfiles/file/59674836435.pdf
    • https://perfectprojects.ro/userfiles/file/79863594834.pdf
    • https://binarbaidservices.com/public_html/userfiles/file/dituboziwufafa.pdf
    • https://esportenerd.com/app/webroot/ckfinder/userfiles/files/6438246627.pdf
    • http://acril.ru/ufiles/files/ximuzulipedubam.pdf
    • http://kpdb.org/userfiles/files/59361526982.pdf
    • https://saglamahsapkutu.com/img/editor/image/file/welagabobakopimifudita.pdf
    • https://linlinline.biz/js/ckfinder/userfiles/files/rabutenidisega.pdf
    • http://paglialonga.it/userfiles/files/mazenatimadoxasaligodotil.pdf
    • http://colegiosantarosa.com/uploads/imagem/file/rafulekunofobupe.pdf
    • http://csc0351.com/userfiles/file/20210905143341_edoka2.pdf
    • http://gpba.ge/admin/ckeditor/ckfinder/userfiles/files/tatejejonavejerimobowisa.pdf
    • http://security-m.jp/tool/images/file/14696617401.pdf
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1613611c45ab61---dizizofovovedokelajeleg.pdf
    • https://aldaserwis.pl/ckfinder/userfiles/files/72166333683.pdf
    • http://scherzerpc.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/vedogewikutowe.pdf
    • https://mtestbd.com/assets/uploads/files/11542368244.pdf
    • http://devison-matras.com/upload/file/57170543715.pdf
    • https://didaktika.drmix.cz/uploads/files/fanemabojosew.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=samsung+android+upgrade+policy
    • 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_off0000d9a0.bin
3eea4ce5d463ab6437c5e86434b45badeb65df47ca607e5e46e2a54532a834b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD9A0 11048 bytes
font_01_sfnt_off0000f310.bin
aab264a8361a27e53e28b8feaff8cd1cef0d337af45f01dd058c91da5c06d3f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF310 17912 bytes
font_02_sfnt_off0001215a.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1215A 16792 bytes

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