Malicious PDF — malware analysis report

Static analysis result for SHA-256 a29a23949362d2c3…

MALICIOUS

PDF

47.5 KB Created: 2021-09-03 16:01:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 2665018f621c6d892d682eff47caeab6 SHA-1: f115a2ffa9dd84c5aed2809f5bc99a0ba9017aa7 SHA-256: a29a23949362d2c336ab454b9c1847c829e3d7f80e8ad290907eed9af65b5e6c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains numerous links pointing to various domains, many of which are hosted on compromised CMS platforms or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The embedded links suggest an attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8049

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 https://volgogradexpo.ru/ckfinder/userfiles/files/puteralojoxujaxoxobofizu.pdf In PDF document text
    • http://kingsfinancialconsulting.com/userfiles/file/wujinivopegofunewel.pdfIn PDF document text
    • https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/1a89949a039641f10533f1f52b667c6e/muzitidipa.pdfIn PDF document text
    • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16082c72ad040a---39410943945.pdfIn PDF document text
    • http://sancheonglittletheaters.com/upload/userfiles/2021/08/files/210819043033.pdfIn PDF document text
    • http://pazarziraat.com/userfiles/file/11424615133.pdfIn PDF document text
    • http://www.yoko-ono.be/images/userfiles/file/86700349035.pdfIn PDF document text
    • https://tinnituskozpont.hu/files/fixugaxosodijiterev.pdfIn PDF document text
    • http://dj-maily.com/uploads/pages/files/84369981272.pdfIn PDF document text
    • http://blueleaves.ru/userfiles/file/86019799764.pdfIn PDF document text
    • http://agendatourvietnam.com/hinhanh/file/rozoro.pdfIn PDF document text
    • https://carparts-fixture.com/file/file/kowopozegeleso.pdfIn PDF document text
    • http://hanasushi6.com/uploads/files/jufagesoditolebagon.pdfIn PDF document text
    • http://nedirajtebosnu.net/userfiles/file/70888928811.pdfIn PDF document text
    • http://harposwebdesign.nl/app/webroot/files/userfiles/files/15830636825.pdfIn PDF document text
    • http://theettiares.com/clients/f/f0/f03dfc1790708d0b03c48e9879ef2ea6/File/34656418375.pdfIn PDF document text
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/3bd91bebc00efd25aaa7854c6be357c6/67039232151.pdfIn PDF document text
    • http://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090ae48681ab---25953481417.pdfIn PDF document text
    • https://digireg.nu/upload/wodali.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=sharper+image+wifi+security+camera+svc562+manualPDF link annotation