Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc746acb6e0dbbd9…

MALICIOUS

PDF

67.9 KB Created: 2021-08-12 20:56:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 4fe26da4c676075af34bd4948d54f169 SHA-1: 97bf1f2a7f95286fccd8854a937316e94b73dded SHA-256: dc746acb6e0dbbd9b61d5701e3849bd3438866251e166918b572f00b7621cf36
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious. It contains a link farm pointing to numerous URLs hosted on compromised WordPress sites and disposable domains, suggesting an attempt to lure users to malicious content. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a phishing or trojan distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8990

Heuristics 5

  • 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
  • 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://maility.pl/_ADRESuserfiles/file/15658712785.pdf In PDF document text
    • http://amandatravel.com/userfiles/file/gijebusewabex.pdfIn PDF document text
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f382fefd89---4165191000.pdfIn PDF document text
    • http://cokhibaosang.com/media/ftp/file/36281146453.pdfIn PDF document text
    • https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080c36097051---4364213740.pdfIn PDF document text
    • https://grahampropertytax.com/wp-content/plugins/super-forms/uploads/php/files/69a6087dec8051493628d626f2ce7a0b/42042653370.pdfIn PDF document text
    • https://postelezmasivu-zlin.cz/ckfinder/userfiles/files/fimopiw.pdfIn PDF document text
    • https://www.idahomedia.com/wp-content/plugins/super-forms/uploads/php/files/de13418a6d64752eb07e187ba4d7b8a0/36853932105.pdfIn PDF document text
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2f7b6c6d0a---sudemeditezesenifogiz.pdfIn PDF document text
    • http://asijskepotraviny.cz/files/file/xikizato.pdfIn PDF document text
    • http://euro-ex.com/images/blog//file/lawopawawoworagimuti.pdfIn PDF document text
    • http://phongthuydotho.vn/upload/files/vafazonero.pdfIn PDF document text
    • https://maintogelonline.info/contents//files/tedexuxumefama.pdfIn PDF document text
    • http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a60e0dc5b9a---logenikidijadoziwir.pdfIn PDF document text
    • https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b72f8c8394c---nezufu.pdfIn PDF document text
    • http://guchenes.com/d/files/tegezuv.pdfIn PDF document text
    • https://athensviptour.com/wp-content/plugins/super-forms/uploads/php/files/f033685b5f97d26c0512032ad4276fd0/nofipum.pdfIn PDF document text
    • https://fitnessrev.net/wp-content/plugins/super-forms/uploads/php/files/cs1trbf2bb4a9c4oruafd7i6e7/29418833160.pdfIn PDF document text
    • https://cristiandellavedova.com/wp-content/plugins/super-forms/uploads/php/files/g2nv8m0ghraqube7dflikhprg2/dixobafab.pdfIn PDF document text
    • http://xn--h49al71atridzo.com/userData/board/file/ranowanizirobig.pdfIn PDF document text
    • http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099cb26ded0b---46890125714.pdfIn PDF document text
    • https://noihoithanhtuan.com/media/ftp/file/vibupurotewama.pdfIn PDF document text
    • http://quaint-house.com/images/blog//file/wasebuwafo.pdfIn PDF document text
    • http://opt-russtd.ru/data_center/upload_pictures/file/jamixutigutujigerireso.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=descargar+goblin+slayer+sub+espa%C3%B1ol+megaPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE09 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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