Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d9ec5904b9ce89a…

MALICIOUS

PDF

72.0 KB Created: 2021-06-28 20:56:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: f068532a584efc53b20bdf708f1af753 SHA-1: 49d50a46a5f8d64baa8337bd0240d64973e5196e SHA-256: 1d9ec5904b9ce89a32f6fda4cd44670009e40f94effb5ec798ca172e50cb5583
154 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, indicating it is likely a phishing or malware distribution lure. The document functions as a link farm, containing numerous URLs that point to compromised WordPress sites and other disposable hosting. These links likely lead to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6632

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 https://wastran.ru/uplcv?utm_term=antisocial+and+borderline+personality+disorder PDF link annotation
    • https://winston-woodward.com/wp-content/plugins/super-forms/uploads/php/files/2d94231e62a8efb92f5481c9defffce0/49390618047.pdfIn PDF document text
    • http://wittlich-luexem.de/userfiles/file/luruxexunixuwurepotuvigi.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160807d03dac5f---47982833327.pdfIn PDF document text
    • https://autoschiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/16087c2e9ac613---wiwiduditufikaguwu.pdfIn PDF document text
    • http://singer-island-condos.com/userfiles/files/basuwov.pdfIn PDF document text
    • http://www.hkwebdesign.com.hk/wp-content/plugins/formcraft/file-upload/server/content/files/1606e4cf723fad---25334767504.pdfIn PDF document text
    • https://teenvolunteerdallas.org/wp-content/plugins/super-forms/uploads/php/files/219fd2e4b61c45c15081800889df774f/kowur.pdfIn PDF document text
    • https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1608fe395d10e0---96758947139.pdfIn PDF document text
    • https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/6be8845c801f89d05ba555496ff1ddcc/38637199135.pdfIn PDF document text
    • http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd8b93d5b92---20834705492.pdfIn PDF document text
    • http://sakuragiramenandsushi.com/uploads/files/92650442350.pdfIn PDF document text
    • http://carszana.com/image/upload/File/waniwipabaxubopij.pdfIn PDF document text
    • https://www.amiunaorchestra.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607eda8707c12---toterosixiredulowide.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/d81e72adfdd5cc9a4981efe216c55d73/44602860560.pdfIn PDF document text
    • https://blackknowledge.com/wp-content/plugins/super-forms/uploads/php/files/502b858cbc2ae06b3377b97de86c1d22/pafunemefav.pdfIn PDF document text
    • http://digimaap.com/wp-content/plugins/super-forms/uploads/php/files/lr0np4vs48q56055f9bit6ncdl/felubaw.pdfIn PDF document text
    • http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/160bae5e316e49---sozivujefoteguketudunu.pdfIn PDF document text
    • http://rcp-ranstadt.us/files/xezusarudimegugaxe.pdfIn PDF document text
    • http://zhodnoceni-penez.cz/is/images/FCKeditor/File/fufarup.pdfIn PDF document text
    • https://binarbaidtrading.com/public_html/userfiles/file/18947365290.pdfIn PDF document text
    • http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca852f01fd---guwobowewuk.pdfIn PDF document text
    • http://alexforstarlight.com/clients/4/41/4125d763bdae894b2c088b8c4c0f4705/File/tegenaxalutaforipedazi.pdfIn PDF document text
    • https://anfauglir.com/images/file/sezinolimizujogajesabo.pdfIn PDF document text
    • https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1606e8873afce0---vekodi.pdfIn PDF document text
    • http://slbreakingnews.com/ckfinder/userfiles/files/telixowebipeje.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_off0000f611.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF611 10740 bytes
SHA-256: 123b51c3ce2ec9136441877ce8c7f9142d2e4c13160e5e6c70c3852f23e89e4f