Malicious PDF — malware analysis report

Static analysis result for SHA-256 9be1c49dd21ad263…

MALICIOUS

PDF

39.0 KB Created: 2021-06-17 10:17:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: f4a7af378fcf6d537138b2671b76d92e SHA-1: e8fb3eb5f9b42aaf599f465c44099b05d6cdb22f SHA-256: 9be1c49dd21ad2635126b985d3aa0d6295b9e47c901b490ff114b2f79689cafc
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file is identified as a malicious screenshot lure, designed to trick users into interacting with embedded links. Multiple heuristics indicate it functions as a link farm, pointing to various compromised websites and disposable hosting. The ML classifier also flagged this PDF as malicious, suggesting a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7322

Heuristics 5

  • 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://infrive.ru/uplcv?utm_term=sabse+badi+hera+pheri+3+south+movie PDF link annotation
    • http://amoy-art.com/Upload/file/68445513936.pdfIn PDF document text
    • http://tpdw.pl/userfiles/file/ronarewo.pdfIn PDF document text
    • https://oneremote.ru/wp-content/plugins/super-forms/uploads/php/files/0b2d9f00ae5a1a060a0132feecc07882/rokugepilom.pdfIn PDF document text
    • http://aostavet.it/userfiles/files/negomugisunuvuxewomup.pdfIn PDF document text
    • https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/02f1497259298dc969e2bbb48fe84c04/bemaloxaxuxesuwu.pdfIn PDF document text
    • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16084138162ed2---kakaxetudiwaburomulopo.pdfIn PDF document text
    • https://canevastoilestjean.com/upload/editor/file/17289856073.pdfIn PDF document text
    • https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/2dc7c1bb9b34d315fc5e3b30140da11a/61068206916.pdfIn PDF document text
    • https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/ca0cf590d848de6bf00b6a4312e4cad1/4675280861.pdfIn PDF document text
    • http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d001653256---67281247981.pdfIn PDF document text
    • https://almoheetmanpower.com/public_html/userfiles/file/93459490406.pdfIn PDF document text
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/c4e4441063aab3cab299c17a595ecb87/xavadowelubugo.pdfIn PDF document text
    • http://for-rent-antwerp.com/wp-content/plugins/formcraft/file-upload/server/content/files/160806934abd9c---89171578915.pdfIn PDF document text
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/1607a5f3fd6e53---44455057121.pdfIn PDF document text

Related samples 8

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