Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bdca2ed09438118…

MALICIOUS

PDF

65.4 KB Created: 2021-09-01 19:29:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 8839c488cfba7c750d727961bec8d6f4 SHA-1: 1574c2fb1fd0e641f6391cdb022358d34ed3d5b2 SHA-256: 9bdca2ed09438118e7ccdcc73f69f70f70db3b0eee8af77efbd0ff8ac5dc267c
162 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains embedded JavaScript and numerous external URIs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm for phishing or malware distribution. The document body is heavily obfuscated, but the presence of JavaScript and the nature of the URLs indicate an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9586

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.
  • 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 https://catamma.ru/uplcv?utm_term=xerox+phaser+6280+service+manual+pdf PDF link annotation
    • https://jamuiboe.com/webroot/upload_media/xaxosuxaviwejo.pdfIn PDF document text
    • http://xn--h49al33a2zdp0eo1x.com/DATA/file/20210731013412.pdfIn PDF document text
    • https://sfasg.jp/js/ckfinder/userfiles/files/94337107213.pdfIn PDF document text
    • https://vildmarksjagt.dk/userfiles/file/levomesuxamutenilovewun.pdfIn PDF document text
    • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/2efca03df72befb17c8f2b12509fb0a8/37882725681.pdfIn PDF document text
    • http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c18092cabb6---97992885177.pdfIn PDF document text
    • http://campingwithconvenience.com/files/files/fugezewefexokufivudiroka.pdfIn PDF document text
    • https://pinotcar.com/wp-content/plugins/super-forms/uploads/php/files/a1638ef5ea556349efa9bf72c145bd92/23268928437.pdfIn PDF document text
    • http://www.nowsingapore.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/1607baf2e75000---89832006511.pdfIn PDF document text
    • http://www.telsercom.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073d5831bd14---janujorelaxiline.pdfIn PDF document text
    • http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d63b32cfed9---24467888525.pdfIn PDF document text
    • https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/u5kopdbuiru71ium9qir9mch0i/23864273285.pdfIn PDF document text
    • http://eastendmediation.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/18989617317.pdfIn PDF document text
    • http://someteme.com/archivos/_20210831175439.pdfIn PDF document text
    • https://www.aironface.com/wp-content/plugins/super-forms/uploads/php/files/dc4c5d79eb83d0dc3ece9277e76616e4/88009218071.pdfIn PDF document text
    • https://www.properties-thassos.com/wp-content/plugins/super-forms/uploads/php/files/q637emp590gavehmf5b9bssiuk/47536875915.pdfIn PDF document text
    • https://indoshaolinkungfusociety.com/ckfinder/userfiles/files/xorimuzi.pdfIn PDF document text
    • http://theeultimatenetworker.com/ckfinder/userfiles/files/72118208957.pdfIn PDF document text
    • https://beaumont-residence.com/wp-content/plugins/super-forms/uploads/php/files/uqgui6iftrua30qotc09btel8c/60259104096.pdfIn PDF document text
    • https://debo-fit.be/userfiles/file///26292135643.pdfIn PDF document text
    • https://bonpetsupply.com/wp-content/plugins/formcraft/file-upload/server/content/files/160820aef8a835---poxewevu.pdfIn PDF document text
    • 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_off0000cc0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC0A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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