Malicious PDF — malware analysis report

Static analysis result for SHA-256 0deb2d77320e4557…

MALICIOUS

PDF

56.7 KB Created: 2021-09-16 17:56:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 09c2914ec33d7ee715401de8fc15918c SHA-1: 738f0c080302cd1ceebc56185cce189b580ab5fa SHA-256: 0deb2d77320e4557aea96ef1487cacd1cbc8becb4c30a70e21278236bc57f3b7
154 Risk Score

Malware Insights

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

The PDF document contains a link farm with numerous external URLs, many of which point to compromised CMS upload directories. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The primary attack pattern involves luring users to click on these links, which are hosted on potentially compromised or disposable domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6383

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://neurondevelopment.org/userfiles/file/5335833037.pdf In PDF document text
    • http://tulga.ru/editor/files/taxobitupevomejuxowagu.pdfIn PDF document text
    • http://fitviewer.info/files/file/68668177689.pdfIn PDF document text
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/161340577f15da---71476147097.pdfIn PDF document text
    • http://ks4073.com/file_media/file_image/file/56320372002.pdfIn PDF document text
    • http://noithatdangcap.vn/app/webroot/uploads/files/wokosojegavago.pdfIn PDF document text
    • http://esipro.fr/userfiles/file/rikona.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/161397ecfca148---39459676728.pdfIn PDF document text
    • https://www.andimoda.com/wp-content/plugins/super-forms/uploads/php/files/8279121ead42c30b0dfddb58975420c2/91599034312.pdfIn PDF document text
    • https://jck.ro/userfiles/file/52182284387.pdfIn PDF document text
    • http://sangsangins.com/upload/upload/file/10909600252.pdfIn PDF document text
    • https://at1-turbo-j3t.com/contents/files/pofofinaduvaruzukazuner.pdfIn PDF document text
    • https://cortopolis.ar/userfiles/file/60450871409.pdfIn PDF document text
    • http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/161353c5e38d2e---bafepanumavufugugusiruje.pdfIn PDF document text
    • http://anshan56.cn/userfiles/file/16312592131055286241.pdfIn PDF document text
    • https://noukos.gr/wp-content/plugins/formcraft/file-upload/server/content/files/161390e3f20b89---77201745657.pdfIn PDF document text
    • https://www.hmgfinance.com/ckfinder/userfiles/files/gasip.pdfIn PDF document text
    • https://2ruoteexpo.it/ckfinder/userfiles/files/melugaralilovirenelogegi.pdfIn PDF document text
    • http://natur-pet.cz/webpagebuilder/ckfinder/userfiles/files/sisoga.pdfIn PDF document text
    • https://hiperaktivite.info/userfiles/files/pewozabevuwidu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=revelation+12+commentary+easy+englishPDF link annotation

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