Malicious PDF — malware analysis report

Static analysis result for SHA-256 d92c9281e75825aa…

MALICIOUS

PDF

70.7 KB Created: 2021-09-02 14:56:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: c057a0a595c66ef8fae1a2af26313221 SHA-1: 5b7cb63e7df99534ca7cb53cb4addd8efc87f38f SHA-256: d92c9281e75825aa5a1c9ff38449cc1a8bafa47a6549756c9e4ce620da103615
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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

Machine Learning

  • Nyx PDF Classifier malicious score 0.8257

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://fceresources.com/ckfinder/userfiles/files/lojafikutijabesisaso.pdf In PDF document text
    • http://bobhendrix-law.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/65683607009.pdfIn PDF document text
    • http://www.tecnotrefg.it/wp-content/plugins/formcraft/file-upload/server/content/files/161206eb0002ab---juvasa.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16094abf87dcaa---fofaw.pdfIn PDF document text
    • http://cioccolatogallucci.it/userfiles/file/vunemafiduzerumi.pdfIn PDF document text
    • https://aathichudi.org/userfiles/file/bidamevi.pdfIn PDF document text
    • https://www.wikiwebagency.it/wp-content/plugins/super-forms/uploads/php/files/94ee7f3f0332c7d401bd9fa02ca3bfa9/54336061065.pdfIn PDF document text
    • https://www.ideaklinik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160725ac05347f---24015812823.pdfIn PDF document text
    • https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e4648eab0f---39880125608.pdfIn PDF document text
    • https://ancoraeducacion.com/images/18699514520.pdfIn PDF document text
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d0cde2279d3---timewopajuxexase.pdfIn PDF document text
    • https://giraffeng.net/infodaily/gen-ckfinder/userfiles/files/jaxabekelimadisitupikoran.pdfIn PDF document text
    • http://coimbrasoftware.hu/images/uploads/files/jinojilud.pdfIn PDF document text
    • http://1utilaje.ro/mm/file/zuxovasuvofuvenupelurile.pdfIn PDF document text
    • http://gestaocipa.com/public_html/Imagens/file/59253466973.pdfIn PDF document text
    • http://berkeleyhigh64.com/clients/9/99/99a482d4bd0dc5522cc24ea7f8204a07/File/44969726974.pdfIn PDF document text
    • http://baraanduliaptti.org/userfiles/file/tajinozibu.pdfIn PDF document text
    • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606ccd17642ec---43848883882.pdfIn PDF document text
    • http://praguetransfer.com/files/file/xevukolujituz.pdfIn PDF document text
    • http://saaretravel.ee/images/file/mafonazam.pdfIn PDF document text
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cc2ab03b85c---suwumigeniwanuwurovupid.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/5027e316a47e352b1f0dae3b2481ce1c/wekuvifamulodij.pdfIn PDF document text
    • http://www.dismaplant.com/ckfinder/userfiles/files/99376678682.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=wsiiroon+obd2+wifi+scanner+manualPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c79a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC79A 10976 bytes
SHA-256: c48f6071e4a37f7cc0ad85a38175b8b9368f995ce49f44522ba5583482654b57
font_01_sfnt_off0000e128.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE128 17740 bytes
SHA-256: 4725711d2ceb2b0365c59a73e4d39265fd50eda85595dbe4d3c57722e1c478e7

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