Malicious PDF — malware analysis report

Static analysis result for SHA-256 cae9d75161299020…

MALICIOUS

PDF

53.9 KB Created: 2021-07-19 08:45:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: b0d54cf566ca03b1cef689b94994cc44 SHA-1: 440d8576d2d5969d174ed4291a7354035cd2526a SHA-256: cae9d75161299020110e66221e0e774a8dcc720ed09636d7f22c44016d77ed04
124 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to compromised WordPress sites acting as link farms. ClamAV also detected this file as a phishing trojan. The primary function appears to be directing users to potentially malicious websites, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4979

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://www.asahinafunnels.com/wp-content/plugins/super-forms/uploads/php/files/b0v9vhv23n31b7k8t3l96sn0vg/xonuvubepobawi.pdf In PDF document text
    • https://wagaskar.com/media/593095357.pdfIn PDF document text
    • http://www.dfdtrading.sk/ckfinder/userfiles/files/15068544460.pdfIn PDF document text
    • https://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c738b435f95---rotujezubudozaguna.pdfIn PDF document text
    • http://www.expo-hotel.com/english/wp-content/plugins/formcraft/file-upload/server/content/files/16075e88837567---46385650342.pdfIn PDF document text
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/160c6c048ae800---novuritivejimisebonov.pdfIn PDF document text
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c3b351797c---rusazidig.pdfIn PDF document text
    • http://doks-films.com/pcms/content/file/fedekuxabolemowis.pdfIn PDF document text
    • http://sbstroy53.ru/img/files/21244922384.pdfIn PDF document text
    • http://parvazyab.net/basefile/api203/files/pafigigugisutekov.pdfIn PDF document text
    • https://clumba-indoor.ru/files/files/24026320350.pdfIn PDF document text
    • http://dungcumaymoc.com/Images_upload/files/pojunidata.pdfIn PDF document text
    • https://chauphongasia.com/wp-content/plugins/super-forms/uploads/php/files/m27nqll8krrt1q3gsh1ncmoh0o/wakinoxinake.pdfIn PDF document text
    • http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160949db38598d---neforajopodididolaf.pdfIn PDF document text
    • http://amuseonline.com/absite/userfiles/file/muxuxe.pdfIn PDF document text
    • http://almar-bus.pl/userfiles/file/limole.pdfIn PDF document text
    • https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/2htgabj5vg444364ijh9asmtv3/kogorerajilurevatudeve.pdfIn PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/v3upq363gloc1m5ms7h18e2ipt/nesonuwibenibidoper.pdfIn PDF document text
    • http://gsmontaggi.it/userfiles/files/86886256510.pdfIn PDF document text
    • https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac0bc81c31c---15037530502.pdfIn PDF document text
    • http://matras-devison.com/upload/file/87836137341.pdfIn PDF document text
    • http://ks4073.com/file_media/file_image/file/21591929818.pdfIn PDF document text
    • https://gbeequestriansurfaces.com/wp-content/plugins/super-forms/uploads/php/files/lrjvrfe7ut7c4qco0gpofv8k0g/54788938724.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=what+force+binds+atoms+togetherPDF link annotation

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