Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bbd1f665bcb1794…

MALICIOUS

PDF

73.0 KB Created: 2021-09-15 21:02:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 04c4c71d7554d54848e643f36cbea689 SHA-1: 2ce1b9073b55e8ea159cc3c12f425a9576f80923 SHA-256: 6bbd1f665bcb1794a6c824cbcafb84035263dafce3e19ed1d97ae42aac500cb0
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, many of which point to disposable hosting or compromised WordPress upload directories, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. No scripts were extracted, but the presence of external URIs and link farm heuristics points to a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 7

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://galerie45.com/userfiles/file/90311153429.pdf In PDF document text
    • http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/16133b75f9a215---81840966348.pdfIn PDF document text
    • http://forglass.sk/userfiles/file/dewagezaxaf.pdfIn PDF document text
    • http://generaldistco.com/images/file/venakenotafagabevovuxaxel.pdfIn PDF document text
    • http://dr-onesrl.com/userfiles/files/21727916730.pdfIn PDF document text
    • http://ssatripoli.org/userfiles/file/sefoxevosaj.pdfIn PDF document text
    • https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/f9fb924ce56a24767e4ef83f3390a942/50905240616.pdfIn PDF document text
    • http://jiin-torng.com/uploadfiles/20210906160902.pdfIn PDF document text
    • http://www.santamyoga.be/images/file/rakusasan.pdfIn PDF document text
    • https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/94c91a43820e1425b85fa83ed4cd9ed8/wudenesil.pdfIn PDF document text
    • http://xsteelstock.com/d/files/jodosupazujopi.pdfIn PDF document text
    • http://dohertylaw.net/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/12953125941.pdfIn PDF document text
    • http://car-zone.sk/data/data/file/57528548091.pdfIn PDF document text
    • http://chaputlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/barasofalofomalejifaken.pdfIn PDF document text
    • http://cz-synergy.cz/data/file/78239717860.pdfIn PDF document text
    • http://cpk.by/ckfinder/userfiles/files/60948532912.pdfIn PDF document text
    • http://mail.me.ntou.edu.tw/ckfinder/userfiles/files/20210915_220159.pdfIn PDF document text
    • http://interel-rus.ru/test/sites/default/files/file/lerelitipage.pdfIn PDF document text
    • http://henskeschildersbedrijf.nl/upload/likiwiparudu.pdfIn PDF document text
    • http://toroisg.com/public/images/files/39619954638.pdfIn PDF document text
    • http://homestationrealty.com/userfiles/files/vuripi.pdfIn PDF document text
    • https://www.cdsale.org.au/application/third_party/ckfinder/userfiles/files/jutexowefot.pdfIn PDF document text
    • http://eschool365.in/js/admin/uploadfiles/file/xuxebel.pdfIn PDF document text
    • https://muahohangnhat.com/app/webroot/uploads/files/96938628218.pdfIn PDF document text
    • http://thomas-zigon.de/images/file/kenivizoxil.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=rules+of+survival+hack+ios+2020PDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • 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_off0000bab3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAB3 10776 bytes
SHA-256: 2b40170f6ab96d5d24145d2509cec8105b484b84cd471527406825caea321d82
font_01_sfnt_off0000d3bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3BB 16464 bytes
SHA-256: 962f7bc09bb543d6749a9a6bb274d2988b053abbe15f1cf11ab2116aca4058bf
font_02_sfnt_off0000fe28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE28 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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