Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c3bb5b4e1b89a8a…

MALICIOUS

PDF

72.0 KB Created: 2021-07-26 10:45:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 80ba8a1d3ae87ade4be1629ab16e3fea SHA-1: d8ee95fb2580422d15b13ca12757f1246ce89f62 SHA-256: 0c3bb5b4e1b89a8aa99976839a45720c0fb6b6fd2acc89a98d9c3eabdfa2722a
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a link farm pointing to multiple domains, many of which host PDF files. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates these links are on disposable hosting and likely serve as a lure for users searching for software. The embedded JavaScript is likely used to facilitate the redirection or download process.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8734

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://arserwood.com/js/fckeditor/editor/filemanager/connectors/php/connector.php/upfiles/file/210504131022634014gszeap.pdf In PDF document text
    • http://unseenadventure.com/userfiles/file/92672066567.pdfIn PDF document text
    • https://www.picmephotoboothhire.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607623f96bbcc---70665222725.pdfIn PDF document text
    • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/anjhd775he5nr89cv50vfk98j5/lorojakutebujaxukuvotif.pdfIn PDF document text
    • http://www.thaiboat.net/image/upload/File/nixalajirajoviwexig.pdfIn PDF document text
    • https://aluminiosarla.com/userfiles_arla/files/xutidoluju.pdfIn PDF document text
    • http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/4a2af3621ab82642e32fd11a4ffd6b6f/nukunakedopevef.pdfIn PDF document text
    • https://daismene.it/file/31115485048.pdfIn PDF document text
    • http://www.skup.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c78ea4b2689---vavejajiluzizebifuzowot.pdfIn PDF document text
    • http://cnex.cc/images/blog//file/setemevujakovekebur.pdfIn PDF document text
    • https://calmoinc.com/upload/editor/file/pusolegezotuxugakusej.pdfIn PDF document text
    • https://aquaticlandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab025a9b780---12985895309.pdfIn PDF document text
    • https://belgradenightlife.info/wp-content/plugins/super-forms/uploads/php/files/vu5nt5p7rd2cv89qci7k9jsc17/33524816199.pdfIn PDF document text
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c6d5e56c5e---21968393248.pdfIn PDF document text
    • https://gbeequestriansurfaces.com/wp-content/plugins/super-forms/uploads/php/files/dgf5rp4iqp9pnmtf1kq1thb7h7/65869176864.pdfIn PDF document text
    • https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a39549ee2e7---40807244218.pdfIn PDF document text
    • http://linkingpeople.info/userfiles/file/72462392202.pdfIn PDF document text
    • https://vieclamxaydung24h.com/upload/files/82421634491.pdfIn PDF document text
    • https://majubesar.com/contents//files/tosalawama.pdfIn PDF document text
    • https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/da66bfda6dfe6ee2fa8f09e3580c8c7e/19770622317.pdfIn PDF document text
    • http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b55409c2dd4---xaretotijovixowezimobuke.pdfIn PDF document text
    • https://nobleanimalsanctuary.org/wp-content/plugins/super-forms/uploads/php/files/tmp/jusugerapekeximafineve.pdfIn PDF document text
    • http://porpora.info/imagenes/imagenes_contenidos///gaferedexi.pdfIn PDF document text
    • https://www.hkfew.org.hk/ckfinder/userfiles/files/75853689102.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=autocad+2014+free+download+with+crack+64+bit+kickassPDF link annotation

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