Malicious PDF — malware analysis report

Static analysis result for SHA-256 863cc358a4345961…

MALICIOUS

PDF

66.5 KB Created: 2021-06-28 14:41:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 2771168c0f7c61fa1e5b1956a59f02a5 SHA-1: 8058ade182b61d2303f64fa1c4f8c3d5550e6efc SHA-256: 863cc358a434596193b0b1dede9ef288627a0dfba2f437d65a5c955b7c1b02cd
174 Risk Score

Malware Insights

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

The PDF is identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. Heuristics indicate it's an image-only document with a clickable action, designed to redirect users to external links hosted on compromised CMS uploads. These links likely serve as a distribution point for further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5460

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 66 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://sumangold.net.vn/wp-content/plugins/super-forms/uploads/php/files/opptse31jm8dic4r5k0sro1b66/gexulomusexuk.pdf
    • http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609498132f942---68003234167.pdf
    • https://www.straightmyteeth.com/wp-content/plugins/super-forms/uploads/php/files/e69e3b037107770a49af559c5d9e65a8/54763352945.pdf
    • http://thinhhoanggia.vn/Images_upload/files/vuzupaj.pdf
    • http://bet-balance.com/userfiles/file/nibedelasetakulofomuxixam.pdf
    • http://klasykarozrywki.pl/public/images/fck/file/tepuparadoxefaxis.pdf
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/160945a94a11bc---jebodi.pdf
    • http://nuitsdartistes.eu/images/file/5618852178.pdf
    • http://dodici12.ru/wp-content/plugins/super-forms/uploads/php/files/smbgrj1ptnd9ptprdq4714apj4/60711381813.pdf
    • https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607f8399a6b34---bidoxukuwawuzarudujilonuw.pdf
    • http://drivingschool-brno.eu/files/69242598280.pdf
    • https://mytutr.com/wp-content/plugins/super-forms/uploads/php/files/0e6d030b4b3cdbdc068c60dae8d09e05/9401571510.pdf
    • http://austria-ex.com/images/blog//file/6445517448.pdf
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4f309539c6---togavuz.pdf
    • https://asiatravel.kg/wp-content/plugins/super-forms/uploads/php/files/262c4b7405669717ce70ac6d75c35209/gaxinebefi.pdf
    • http://musiclivemarsala.com/userfiles/files/23323578782.pdf
    • https://luathoanghuy.com/uploads/files/22036419750.pdf
    • https://atlanthealth.com/wp-content/plugins/super-forms/uploads/php/files/632b2c49596f738946af0200d8811082/8002364428.pdf
    • https://infrastone.com/userfiles/files/78026627019.pdf
    • https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/nscvbgg7h6pk1b89olg6fmpf73/magex.pdf
    • https://leicht-spb.ru/wp-content/plugins/super-forms/uploads/php/files/c0f448a59f689682c830ab6e56011f2f/72332912189.pdf
    • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607830d8a36bc---kureparejiteruverudupe.pdf
    • http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/160842b6b44637---76314286399.pdf
    • http://host.keraladreamhomes.com/~viswabrahmathach/admin/fckeditor/editor/filemanager/connectors/php/userfiles/file/52233033882.pdf
    • http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607c86d504eda---rajapefomavisigozeko.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=if+hno3+changes+into+n2o+the+oxidation+number+is+changed+by

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