Malicious PDF — malware analysis report

Static analysis result for SHA-256 6baac9b6d20b94dd…

MALICIOUS

PDF

63.2 KB Created: 2021-07-14 04:56:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 3eb6810d474ecf8ab2a5d011cdfca630 SHA-1: cbf8d3d62d2d1b8c0c37164a108aa90485d1cacf SHA-256: 6baac9b6d20b94ddc122fbf3dd1c3958d0058e80c83533f97dceddde9ed70f67
154 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many hosted on compromised CMS platforms or disposable domains, indicating a link farm designed to direct users to malicious content. The ClamAV detection and ML classifier strongly suggest a phishing or trojan payload delivery mechanism. No scripts were extracted, but the structure and URL patterns are indicative of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5217

Heuristics 5

  • 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.
  • 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://veraschwemmle.de/fckdata/file/5039922721.pdf In PDF document text
    • https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e2a613602f---vopitakexovudur.pdfIn PDF document text
    • https://www.grandiosa.is/wp-content/plugins/super-forms/uploads/php/files/qpgu7eb6scqn1i6eiohmlsjcd4/26806866817.pdfIn PDF document text
    • https://sipsib.ru/wp-content/plugins/super-forms/uploads/php/files/11b3da6bd93e5e93471032bf2b47f886/babimokijuri.pdfIn PDF document text
    • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3af240a10e---52142247320.pdfIn PDF document text
    • https://hgb.se/filer/file/19698154799.pdfIn PDF document text
    • https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/160868e578215a---24744110436.pdfIn PDF document text
    • http://maynenkhipuma.vn/quangbasanpham/app/webroot/upload/image/files/35128502927.pdfIn PDF document text
    • http://wf515345.tw/CKEdit/upload/files/rajorukugozokafib.pdfIn PDF document text
    • https://sasalidayanisma.org/uploads/file/79469811947.pdfIn PDF document text
    • https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/0cc6b7237f7edb52372181604265e6a0/60821055706.pdfIn PDF document text
    • https://www.kasekimi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cca403b90d---89117991972.pdfIn PDF document text
    • http://benjamin1908.com/clients/f/f4/f4560e3fe432b95d15e234f900dec36a/File/55340947817.pdfIn PDF document text
    • https://marmarases.com/upload/ckfinder/files/91664419179.pdfIn PDF document text
    • http://singer-island-condos.com/userfiles/files/33070494381.pdfIn PDF document text
    • https://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/6971d78156db395ad67d8107ab8d0e8f/fazozepobuzus.pdfIn PDF document text
    • https://homini.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160ba1d294a52e---jipejemivazusoravomowadur.pdfIn PDF document text
    • http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dda356ba1c2---32168190602.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/dawejidafujeloxa.pdfIn PDF document text
    • https://www.mii.net/wp-content/plugins/super-forms/uploads/php/files/18dfda2ba36ce64e7e55dc54bfa80ac3/7030204136.pdfIn PDF document text
    • https://oknoplus-omsk.ru/wp-content/plugins/super-forms/uploads/php/files/61d16206598595952d5bb8931046c30c/43724082797.pdfIn PDF document text
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607debdd9e991---vibawo.pdfIn PDF document text
    • https://sunrise-photon.com/upfiles/editor/files/98655642275.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=adding+similar+fractionsPDF link annotation

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