Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaac0fcae9f68679…

MALICIOUS

PDF

39.4 KB Created: 2021-06-04 13:29:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 0d5fe154b42f7d1e10bab25bea88d4d0 SHA-1: c77a0b7fdd0ad397f0724d32bedff1ab6449f6c8 SHA-256: aaac0fcae9f6867992d66576927ed6f920ae94dea3e890fad14af57d48eb8a8a
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file is detected as malicious by ClamAV and exhibits characteristics of a phishing lure. It contains numerous external links, many pointing to compromised CMS uploads and disposable hosting, suggesting an attempt to redirect users to malicious sites. The heuristic 'PDF_IMAGE_LURE' indicates the document likely presents an image to trick users into clicking a link, which is a common tactic for delivering malware or conducting phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7786

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 39 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://inwebjor.ru/uplcv?utm_term=jasmine+richardson+new+identity+2017 PDF link annotation
    • https://akita-inu.lv/www/files/files/6099198601.pdfIn PDF document text
    • https://asthasupermarket.com/userfiles/file/65316977995.pdfIn PDF document text
    • https://tucsonhomewindowtint.com/wp-content/plugins/super-forms/uploads/php/files/f0fb819b9f783c3b68e625f3ed704ba9/14741191669.pdfIn PDF document text
    • https://dmddsgn.com/wp-content/plugins/super-forms/uploads/php/files/7121b166f84b7b11f6cd4003772cc205/39561447147.pdfIn PDF document text
    • https://www.alpha-dynamics.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16075b58699ad6---5675238703.pdfIn PDF document text
    • http://clubselectionvoyages.com/images/file/rimas.pdfIn PDF document text
    • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b3b2f88ecde---45799780034.pdfIn PDF document text
    • http://comicpapyrus.com/wp-content/plugins/super-forms/uploads/php/files/9188f5183d0726025e0c9aea294cfe38/27211654500.pdfIn PDF document text
    • http://fatamorgana.fr/uploads/assets/file/gilewivej.pdfIn PDF document text
    • https://prikolnaya.com/wp-content/plugins/super-forms/uploads/php/files/4c0c51289abb946c0dee058c4f383a61/77803770327.pdfIn PDF document text
    • https://www.elitelawnsolutions.co.uk/wp-content/plugins/super-forms/uploads/php/files/do454v9jaukto9a0ldbbeusvpp/75519565213.pdfIn PDF document text
    • http://koryosushi.com/uploads/files/pajarogimirofevel.pdfIn PDF document text
    • http://ideas4mypool.com/userfiles/file/98077977005.pdfIn PDF document text
    • https://ka-base.no/images_content/file/22688227457.pdfIn PDF document text
    • http://navigator-33.ru/media/file/26943732719.pdfIn PDF document text
    • https://robinio.de/wp-content/plugins/super-forms/uploads/php/files/sg361uggpikpcn2c6rn0njouqr/28806487788.pdfIn PDF document text
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/c8d4ad4b1d5cdc1e406665f6e286aedd/1063343677In PDF document text

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