Malicious PDF — malware analysis report

Static analysis result for SHA-256 79045469ead6d9dc…

MALICIOUS

PDF

64.0 KB Created: 2021-08-13 13:07:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 410a565e206561b3ad25ec78f0450900 SHA-1: 45579c1a330ea6044efe0141c1c520f096e2b077 SHA-256: 79045469ead6d9dca4f5fea2b873bb07b2863cc9d23216d17a61815ae8abd5d5
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to various websites. Some of these URLs are hosted on compromised CMS uploads or disposable hosting, suggesting an attempt to distribute phishing content or malware. The PDF's structure and the nature of the linked sites align with common tactics for luring users to malicious destinations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6654

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 http://kjphotocon.org/data/userfiles/files/67754455041.pdf In PDF document text
    • http://mamnonkitty.com/webroot/img/posts/files/78645480927.pdfIn PDF document text
    • http://111-orte.de/testarea/cwsCMSlight/media/files/6646351331.pdfIn PDF document text
    • http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f0c29b392c---71683551549.pdfIn PDF document text
    • https://gyn-koe70.de/obrazky/file/kedafobobawatuni.pdfIn PDF document text
    • http://bundoreh.com/fckeditor/files/file/90931446295.pdfIn PDF document text
    • https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/d9bdd1fcfee1c15ce104112a99af13bf/63262827977.pdfIn PDF document text
    • https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084e0daea396---pekapimorobonilawoperevim.pdfIn PDF document text
    • http://castel.lu/userfiles/files/26983389741.pdfIn PDF document text
    • http://npi-management.org/ressource/site-image/files/buwojed.pdfIn PDF document text
    • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/57a330b863631ee55bdac9543673d174/fewabe.pdfIn PDF document text
    • https://mut-zur-veraenderung-hambuch.de/userfiles/file/gufasabexafanosivinugim.pdfIn PDF document text
    • http://logiccpacma.com/ckfinder/userfiles/files/70523380938.pdfIn PDF document text
    • https://imagebuzz.net/ckfinder/userfiles/files/terezetuvetako.pdfIn PDF document text
    • http://bugaboo-buffalo.eu/UserFiles/File/figigi.pdfIn PDF document text
    • https://glbtrader.com/userfiles/file/juxase.pdfIn PDF document text
    • http://rajhansnursery.com/userfiles/file/tepelusumutuvoni.pdfIn PDF document text
    • http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/16071bf9299e00---pefuvezire.pdfIn PDF document text
    • http://windmill-bv.com/userfiles/files/jisuruma.pdfIn PDF document text
    • https://www.siemers-deutschmann.de/wp-content/pluIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=cu%C3%A1les+son+las+bases+nitrogenadas+del+arn+ribosomalPDF link annotation

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