Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cc6ca9b618dc95b…

MALICIOUS

PDF

42.1 KB Created: 2021-08-10 09:18:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-25
MD5: e0c81ab2c17eb8925218ee6bf654a9b8 SHA-1: 0cfd95b26ba207e339544caf33caeb09e74e9a2b SHA-256: 2cc6ca9b618dc95b223b18b29b48cde7e3a2ae7f9484dc5694c2d29f0a1d3d8b
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and uses an image-based lure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7020

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 42 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://laborke.ru/uplcv?utm_term=mektoub+my+love+intermezzo+full+movie+online+123movies PDF link annotation
    • http://www.molinoag.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074cb5be4bd7---62005073528.pdfIn PDF document text
    • https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/736e216aa29aeb7ff1167f1fa886d55c/jalofi.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/fff62242fb06a0c2fd82ce6318069c9c/gikejajejogevidixumapipem.pdfIn PDF document text
    • https://elsadaulte.com/ckfinder/userfiles/files/45523655979.pdfIn PDF document text
    • http://jonme.net/ckupload/files/2434728503.pdfIn PDF document text
    • http://profisystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16079f0ec84126---39025987085.pdfIn PDF document text
    • http://takemehometomatoes.com/ckfinder/userfiles/files/79243028740.pdfIn PDF document text
    • http://fundacionecla.org/resources/original/file/mivovotefudanudizol.pdfIn PDF document text
    • https://brune-schmuckwerk.de/ckfinder/userfiles/files/99125214412.pdfIn PDF document text
    • https://webgirls-studio.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c29e1fda990---kokazalupunomolirix.pdfIn PDF document text
    • http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/16088b60f4546e---pemoxowoxebiwo.pdfIn PDF document text
    • https://brakos.it/file/47153651189.pdfIn PDF document text
    • http://sbox-technology.com/upload/datoteke/viruxamufilu.pdfIn PDF document text
    • https://www.medipratik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a6ae709568---35777425394.pdfIn PDF document text
    • http://systemsbiology.at/uploads/assets/file/jukexekavus.pdfIn PDF document text
    • http://hophungvietnam.com/app/webroot/uploads/files/timurokavil.pdfIn PDF document text
    • https://champion-osk.pl/userfiles/file/xusukewiduletomi.pdfIn PDF document text
    • https://siphouse96.com/wp-content/plugins/super-forms/uploads/php/files/1b4f64fdb5229462830a94cb31f0f59e/kovev.pdfIn PDF document text
    • http://www.chicagoalphas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606da043800e4---26607102535.pdfIn PDF document text
    • http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093b2c6c6c20---59498499445.pdfIn PDF document text
    • http://global-poseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084cbed5f5ed---rafezoraxo.pdfIn PDF document text
    • http://czdashan.cn/uploadfile/file/2021051017262673499.pdfIn PDF document text
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607c65af80ab9---91933582588.pdfIn PDF document text

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