Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff0ed47dee1e20fa…

MALICIOUS

PDF

79.9 KB Created: 2021-06-28 06:49:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ecb6b88b9dc3b99571ac721ed98d970a SHA-1: 4e8b484b9eb86786e73f2e1bb48b82668358de29 SHA-256: ff0ed47dee1e20fa7135a6ab8f9c0f899f1d980986a72fe067312d4d9c54acaa
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links pointing to compromised WordPress sites, indicating a phishing or redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to lure users to malicious content or downloads. No scripts were extracted, but the structure and URL patterns are indicative of a link farm designed for malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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 http://vudafrique.com/wp-content/plugins/super-forms/uploads/php/files/f9ed9db9c8f97df200e5c9c57d9f1ec7/49668191525.pdf
    • https://iescolumbus.org/wp-content/plugins/super-forms/uploads/php/files/20b75fb6660420309a699693ecac9778/88737857073.pdf
    • https://chameleoncoupons.com/adgprocessing/uploads/files/52953678318.pdf
    • http://iamsoldierfit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4ba3f13432---wofunisitusariv.pdf
    • http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160879106a82ee---bomigoziwe.pdf
    • https://homini.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160c1ab6831cfa---47452828189.pdf
    • https://szekszardportal.hu/userfiles/file/mutosovagugurofone.pdf
    • https://fallsplat.se/file/poresadobemosevez.pdf
    • https://takiminsahada.com/wp-content/plugins/super-forms/uploads/php/files/0acscprnkk1f9ka4590bn9ki50/vuziwuvivikados.pdf
    • https://gachbinhduong.com/upload/file/zuwaliwiwawatowexotugufid.pdf
    • https://choiceenergynetwork.com/wp-content/plugins/super-forms/uploads/php/files/06880bc3d658141c26aa68a3b4608d4a/lusatojinapumezisor.pdf
    • http://illinoislivestock.org/userfiles/file/nepivirosukujokidetaxabuf.pdf
    • https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/bcee8a78236b617d81fb852055448d47/47483722158.pdf
    • https://interesttour.com/wp-content/plugins/super-forms/uploads/php/files/b93a6267a70f378a3bb97f4f86cbd9bd/pefolorawe.pdf
    • http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/160774665624a8---felabefovozojerowodav.pdf
    • https://www.mnspineandsport.com/wp-content/plugins/super-forms/uploads/php/files/e7284ae28036e52d3674018a48554442/fesozux.pdf
    • https://wulf-sanitaer.de/wp-content/plugins/super-forms/uploads/php/files/1qf61jr86319qh0kutflh2fonb/paxuwifosesiwuxiso.pdf
    • https://bleikss.com/userfiles/file/44378448442.pdf
    • https://kurek-rowery.pl/user_pict/file/kakiwoxuxunifaz.pdf
    • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608e413774486---42173888967.pdf
    • https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ff20984138---rexewezineru.pdf
    • http://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/4pgai6re0e18rpp763an4tlps5/8974713760.pdf
    • http://geose.ru/userfiles/file/66986283995.pdf
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9ba044db84---tupisar.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=art+and+culture
    • 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_off0000d5c4.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD5C4 16792 bytes
font_01_sfnt_off0000edd6.bin
bb3ffa07eaff1256b28e92f636637142be1dfeae9601dea711bf0cb470ab0127		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD6 17100 bytes
font_02_sfnt_off00011a75.bin
864de9d7d82fe52a4a098e2c41a3c49bd4af4313dce764d14914327994652488		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11A75 10064 bytes

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