Malicious PDF — malware analysis report

Static analysis result for SHA-256 716bba0b3fc1853b…

MALICIOUS

PDF

48.0 KB Created: 2021-09-24 18:54:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 99a4007ccbdbc641f67ee28ccb05b2f0 SHA-1: 800af0361b0fa790a87db5e5eefe3bd2da30d77d SHA-256: 716bba0b3fc1853b87dc5893bb61cac90872dbb9e0b76b5bc53d2bc939b97495
154 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised CMS upload directories, indicating a link farm designed to distribute malicious content. The ClamAV detection and ML classifier further support its malicious nature. The presence of multiple unknown URLs suggests a broad distribution effort, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6808

Heuristics 5

  • 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.
  • 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://salondumariagededijon.com/userfiles/file/76450318718.pdf In PDF document text
    • http://blgjad.com/upload/files/kikasasijevizibotuv.pdfIn PDF document text
    • http://captainkillmite.com/uploads/files/202109140630166935.pdfIn PDF document text
    • http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614201be77256---sixofosuwik.pdfIn PDF document text
    • http://deltools.com/userfiles/file/40869949084.pdfIn PDF document text
    • https://stijsr.com/userfiles/file/furavizokenedugalo.pdfIn PDF document text
    • https://apapunada.com/contents/files/90921865384.pdfIn PDF document text
    • http://www.toptehnik.si/images/79938849119.pdfIn PDF document text
    • https://novahealthclinic.ca/userfiles/file/jojipogapu.pdfIn PDF document text
    • http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/p7psfr0e0qafvj8iiao29lbpu6/muvarifazizam.pdfIn PDF document text
    • http://anoh.net/pds/userfiles/files/85414514161.pdfIn PDF document text
    • http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613dc6ab9e665---30143377267.pdfIn PDF document text
    • https://rh4-h1tapi-turbo.com/contents/files/24850030141.pdfIn PDF document text
    • http://sonhanint.com/uploadpic/sun/files/202109101951138539.pdfIn PDF document text
    • https://feriaesotericadeatocha.com/wp-content/plugins/formcraft/file-upload/server/content/files/16144e3d50bb6d---fevijekilifo.pdfIn PDF document text
    • http://ladyvenus.it/userfiles/files/jodun.pdfIn PDF document text
    • http://dlevitin.ru/fck_editor_files/files/92531352302.pdfIn PDF document text
    • http://turbotechnik24.de/userfiles/file/87328910493.pdfIn PDF document text
    • http://maximaviajes.com/FCKfiles/file/73453220400.pdfIn PDF document text
    • http://kashima.cc/userfiles/file/14324276094.pdfIn PDF document text
    • http://www.tobywells.org/media/fckdir/file/98019068038.pdfIn PDF document text
    • https://caribemed.com/userfiles/file/voloxebigutaxalejojiz.pdfIn PDF document text
    • http://spc1991.com/ckfinder/userfiles/files/31963701657.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=igtools+net+video+viewsPDF link annotation

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