Malicious PDF — malware analysis report

Static analysis result for SHA-256 9789fe6488f9e727…

MALICIOUS

PDF

62.8 KB Created: 2021-10-03 22:46:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: b467958e1deedba3759e96d3f192b922 SHA-1: 2ada6da4adde3d302dbe1fa5189b7e91399311c6 SHA-256: 9789fe6488f9e72775a2fea228e612be259a675867710ed266b5514c51c855c1
132 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and numerous external URIs, many of which point to compromised CMS uploads or disposable hosting, indicating a link farm designed to redirect users to malicious sites. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a phishing or malware distribution intent. The embedded JavaScript likely facilitates the redirection or exploitation process.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4625

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 https://garglob.ru/uplcv?utm_term=reference+from+landlord+example PDF link annotation
    • http://anshan56.cn/userfiles/file/1631346526935412047.pdfIn PDF document text
    • https://avantkart.com/wp-content/plugins/super-forms/uploads/php/files/7mqp6pnhkjhhlp93m6h518ao6a/sajunagadaxuxatubomegizef.pdfIn PDF document text
    • http://scenekunstskolen-efteruddannelsen.dk/ckfinder/userfiles/files/bemululi.pdfIn PDF document text
    • http://gold-carsales.com/js/upload/files/wasimixadabaza.pdfIn PDF document text
    • http://archetipoingegneria.it/userfiles/files/bilafufataki.pdfIn PDF document text
    • https://csmgh.net/pevron/www/img/file/ruvinaremiwemosedam.pdfIn PDF document text
    • http://hotspot-usa.com/js/upload/files/23828123405.pdfIn PDF document text
    • http://szamosiszerviz.hu/feltoltott/files/28474468235.pdfIn PDF document text
    • https://ciiinnovationsummit.com/ci/userfiles/files/jotabusopekomigonorejo.pdfIn PDF document text
    • http://elektromig.pl/userfiles/file/bekidejakujupone.pdfIn PDF document text
    • http://stowarzyszeniemalyksiaze.eu/img/upload/files/boludetotikafutatodezaw.pdfIn PDF document text
    • https://mystruggle.uk/indigo/ckfinder/userfiles/files/58203559610.pdfIn PDF document text
    • http://ayurveda-shiatsu-qigong-nice.com/upload/files/53499605617.pdfIn PDF document text
    • https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ca93801a36---duluzewifadixobafalixaw.pdfIn PDF document text
    • http://www.stemcellhairclinic.com/files/files/28168268982.pdfIn PDF document text
    • https://drddvichitra.com/userfiles/file/98307370457.pdfIn PDF document text
    • https://dpengineers.info/admin/userfiles/file/21835016088.pdfIn PDF document text
    • http://fruhmann-elektrotechnik.at/34873739880.pdfIn PDF document text
    • https://mikepromedia.com/wp-content/plugins/super-forms/uploads/php/files/236bf63367b91cb727412942a3d11b33/98734089809.pdfIn PDF document text
    • http://raczcsalad.hu/files/64846750548.pdfIn PDF document text
    • https://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/16137d0b7800a4---jaxajativunemezujozax.pdfIn PDF document text
    • https://em.heephong.org/ethnicminorities/cmsadmin/ckfinder/files/mijesekili.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/a0cbf438501a21e4e32665189f37aea8/sepanubotizozaruv.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b1ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1EF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ca06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA06 10568 bytes
SHA-256: 7e09d57341bab291599eef7f88e46c8bf5bcefdec58101daac845bdbb8f791f4

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