Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ac5febc25976080…

MALICIOUS

PDF

54.6 KB Created: 2021-07-10 08:10:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 7007e90b7fd9d529b6894566a8d1fee7 SHA-1: 9f68ed877386a103c8cb4099f99c286f6241979a SHA-256: 3ac5febc2597608029579e80767c87e5232fe079327ccc8a3ecef00c409edf90
94 Risk Score

Malware Insights

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

The PDF file contains a link farm pointing to numerous other PDF files hosted on compromised WordPress sites and other domains. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting for these links. The ML classifier also flagged this PDF as malicious, suggesting a high likelihood of malicious intent behind this link distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5222

Heuristics 4

  • 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://fujavietnam.com/images/Download/96980832878.pdf In PDF document text
    • http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cdd2836e38---furiwam.pdfIn PDF document text
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b54b7c497a2---20684530904.pdfIn PDF document text
    • http://kleinschaden.expert/userfiles/file/48337533977.pdfIn PDF document text
    • http://sattamatkapatti.com/userfiles/file/midururowiv.pdfIn PDF document text
    • https://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b758e48d9d6---57434138824.pdfIn PDF document text
    • http://rrbrentacars.com/files/others/gejozoxesuraganokif.pdfIn PDF document text
    • http://guitarenko.fr/img/files/radiz.pdfIn PDF document text
    • http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608729cd6f3fd---74251868053.pdfIn PDF document text
    • https://vibangthuaphatlai.net/uploads/files/51095934374.pdfIn PDF document text
    • http://goddesshair.net/upload/users/files/96864316617.pdfIn PDF document text
    • http://onlineticketreview.com/images/file/betipusibetu.pdfIn PDF document text
    • https://inchiriereelicoptere.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c311c733744---19415818854.pdfIn PDF document text
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/1609ef5c237b89---70167877328.pdfIn PDF document text
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/5f0b0139e6728a45bff6b913079f6877/vasujebumasalomujixegede.pdfIn PDF document text
    • https://giustofiori.it/file/mesenikuxudasumakowi.pdfIn PDF document text
    • https://functionalmovement.gr/wp-content/plugins/super-forms/uploads/php/files/d23f73e99f5e62e644d45b6328c3f6f0/xuvasikojimujitesovem.pdfIn PDF document text
    • http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607490b824c3e---rigisun.pdfIn PDF document text
    • https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/2f5d5a8fa5592c1ec5b02740f141df85/kinad.pdfIn PDF document text
    • https://aliencosmicexpo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e0b01ee8693---rugosomasiged.pdfIn PDF document text
    • https://www.xcelsus.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a8fa56946db---57514663082.pdfIn PDF document text
    • http://broadgatecapital.com/userfiles/file/gekalabugapakexapemegi.pdfIn PDF document text
    • http://blackivy.pl/userfiles/file/gopunedodiludesenexuxo.pdfIn PDF document text
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/b3c42d8aa941024b3323b7667c11bb89/gifagevazomikubekuge.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=clinical+psychology+definition+pdfPDF link annotation

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