Malicious PDF — malware analysis report

Static analysis result for SHA-256 13ecec714f8765a9…

MALICIOUS

PDF

77.5 KB Created: 2021-09-07 15:47:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-02
MD5: 0226138d86ce47838b683f22dd6431c2 SHA-1: 09d21e4f49a6feeaf7cd04bc19397af9b430a69e SHA-256: 13ecec714f8765a9a576dbb7ebab61a92f1198eb61b2a69c101bf72906a36cc7
132 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and contains embedded JavaScript. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2890

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://rc-modeller.se/images/file///22055761827.pdf In PDF document text
    • http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613704bab0f7d---9972215156.pdfIn PDF document text
    • http://better-pharma.com/images/file/files/kewupawofaxetegufuwu.pdfIn PDF document text
    • http://domusanna.it/userfiles/files/feropokujegobovowufakal.pdfIn PDF document text
    • http://drstevealbrecht.com/wp-content/plugins/super-forms/uploads/php/files/5b3e6d4b5c7ad929e53ada41aa0016f6/74826540755.pdfIn PDF document text
    • http://guinyardfamilyreunion.com/clients/62985/File/pijobin.pdfIn PDF document text
    • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fa1c5388a3---gowunogazivitif.pdfIn PDF document text
    • https://asiapharma.la/files/files/lowemodekokisul.pdfIn PDF document text
    • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607b8f5e740b1---lopefofubadudekisotawegos.pdfIn PDF document text
    • http://amirafouad.com/uploaded_files/file/magevatilixunewudezolekab.pdfIn PDF document text
    • https://www.asahinafunnels.com/wp-content/plugins/super-forms/uploads/php/files/674f81gusgf3v31r4ll6fnordi/sugumidetota.pdfIn PDF document text
    • https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/pp1ehshqamnjf1jvtp1f445bjp/tupezatovome.pdfIn PDF document text
    • http://guanzhuli.com/userfiles/file/28447315535.pdfIn PDF document text
    • https://hoakhanh.vn/uploads/image/files/79834383310.pdfIn PDF document text
    • http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a61abf57c0d---mojasaz.pdfIn PDF document text
    • https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160bda419828f9---belumosi.pdfIn PDF document text
    • https://allcreaturesinc.com/files/files/5146791605.pdfIn PDF document text
    • https://pablohernandes.com/wp-content/plugins/super-forms/uploads/php/files/53a577fdaa218b7a63d4485fa6059722/rapexugavakodikuganoj.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9707385c15---mobedotelozupuwatedinave.pdfIn PDF document text
    • http://angelojrobles.com/admin_initial_test/userfiles/file/kozawaxetipotenis.pdfIn PDF document text
    • http://houstontca.org/Content/uploads/files/54053160051.pdfIn PDF document text
    • http://studioscoponi.eu/userfiles/files/fijuvafudezatetatek.pdfIn PDF document text
    • http://studiosimonepantaleo.it/userfiles/files/59190764298.pdfIn PDF document text
    • http://speed-r.com/js/upload/files/42321891077.pdfIn PDF document text
    • https://3dreamstudios.com/wp-content/plugins/super-forms/uploads/php/files/5782f8dad2308ba9d178f99671414fc6/58120830634.pdfIn PDF document text
    • https://digireg.it/upload/98743094962.pdfIn PDF document text
    • https://gz-topstar.com/wp-content/plugins/super-forms/uploads/php/files/29e2e27cb0c94857a18a5a5bc6703731/40974615909.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=english+worksheets+for+grade+3+printablePDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB28 17688 bytes
SHA-256: 287aedb551d1b2968fae1dc5af4066e9c2ffb0537886ad94b6833aad204df039
font_01_sfnt_off00010919.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10919 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012130.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12130 11248 bytes
SHA-256: bc9afa9527bc6a1172837e47118c9c3b51d128e7032f6512c509e82c5f99ecb0

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