Malicious PDF — malware analysis report

Static analysis result for SHA-256 99c668434e3a0aee…

MALICIOUS

PDF

59.5 KB Created: 2021-07-16 06:13:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 9db4f281bd5547a14d825d3d95de8f48 SHA-1: 0f6061aebb80654b9f4830a972fb57ebe9804f2e SHA-256: 99c668434e3a0aee29a2c6e3170e4fbbdc8501e33856c7b404866f4c253dc258
124 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs that point to various websites, including those hosted on compromised CMS platforms. This behavior is indicative of a link farm designed to redirect users to malicious sites, likely for phishing or malware delivery. The ClamAV detection further supports its malicious classification.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3246

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://pistant.ru/uplcv?utm_term=a+stitch+in+time+saves+nine+definition PDF link annotation
    • https://gachbinhduong.com/upload/file/jepasalasunigutupubinum.pdfIn PDF document text
    • http://archinfo.ru/uploads/file/gogupurotavunadonipunaxo.pdfIn PDF document text
    • https://www.indee-r.fr/wp-content/plugins/super-forms/uploads/php/files/6078bdc3f96d460cca58c1ef4c496a9f/pamokovu.pdfIn PDF document text
    • http://kinel-hunter.ru/upfiles/file/713224159.pdfIn PDF document text
    • http://greenberetrotcmedals.org/clients/e/ee/eef2f5edcbf7b69ea683240098563b39/File/17251818206.pdfIn PDF document text
    • http://doktor-okonski.pl/uploadimg/file/rezadavowukovetinozuravip.pdfIn PDF document text
    • https://grafitpoint.ru/wp-content/plugins/super-forms/uploads/php/files/d66db082c5d4dd4584fa93558528db30/70184986956.pdfIn PDF document text
    • https://angelsstaff.com/uploads/file/93665704746.pdfIn PDF document text
    • https://topinsolventa.ro/userfiles/file/xuderudedimarisa.pdfIn PDF document text
    • http://accapierre.it/userfiles/files/wukijoxu.pdfIn PDF document text
    • https://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070185583d97---51919784672.pdfIn PDF document text
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d23bff149a---47490774986.pdfIn PDF document text
    • http://avtoarka.ru/wp-content/plugins/super-forms/uploads/php/files/c5a53f4030d1bd438c6a1362844c73ea/49957424522.pdfIn PDF document text
    • http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1607a7b60a7dd7---jozogesonu.pdfIn PDF document text
    • https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/6ef1daad29800717b8a6bad0c846575c/fowazedalatokubilata.pdfIn PDF document text
    • https://zabulgaria.org/userfiles/file/wivitikusimitawag.pdfIn PDF document text
    • http://bandenplaats.nl/cmsimages/file/90551980195.pdfIn PDF document text
    • https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/160ec4ca2ad4ea---koxolelimig.pdfIn PDF document text
    • https://www.accidentinjurylascruces.com/wp-content/plugins/super-forms/uploads/php/files/fc7h7gfp6jln73uh7639iq9f5e/vadapodisofinulefokuromis.pdfIn PDF document text
    • http://sns.hu/_user/file/24245836607.pdfIn PDF document text
    • https://aakritidigitals.com/userfiles/files/mitezunu.pdfIn PDF document text
    • http://asbazainville.org/userfiles/file/toluturakedimas.pdfIn PDF document text
    • https://getracemirates.com/userfiles/files/84740747612.pdfIn PDF document text
    • http://uniquehotelsolutions.com/files/others/79588561708.pdfIn PDF document text
    • http://kanchanaspa.com/ckfinder/userfiles/files/60556871003.pdfIn PDF document text
    • http://candybeauty.vn/upload/files/9569292168.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/s6g31f3u7vfsk5f4lshka9joi6/8827708240.pdfIn PDF document text

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