Malicious PDF — malware analysis report

Static analysis result for SHA-256 09eabd2d372d245f…

MALICIOUS

PDF

88.6 KB Created: 2021-08-02 16:18:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: a660985939512773bc9144ea871c8d58 SHA-1: 267c2f387687d5e65860de0912d0ab9a5dcb6aea SHA-256: 09eabd2d372d245f810d75afda217b69945bedb875fed8c0d7b350e7521ee811
96 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to compromised websites or disposable hosting, indicating a link farm designed to redirect users to malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is intended for phishing or malware distribution. The presence of multiple external URIs and link farm heuristics confirms the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

Heuristics 5

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://pixomot.ru/uplcv?utm_term=how+much+does+a+new+id+cost+in+ohio PDF link annotation
    • https://camgloberealtor.com/userfiles/file/tenovaduzumujaroli.pdfIn PDF document text
    • https://hkparkkonutlari.com/image/files/83709704902.pdfIn PDF document text
    • https://www.eziblank.com/wp-content/plugins/super-forms/uploads/php/files/aeedc9ebbc73650a8a0c622bbdd34493/xomezujetelekaxiw.pdfIn PDF document text
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085261adb6f9---87194637224.pdfIn PDF document text
    • http://mamnonlittlesun.com/upload/files/20248216899.pdfIn PDF document text
    • https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/c5n4iug7rjcq5c6764ih66ffre/16783146995.pdfIn PDF document text
    • https://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/3d5a8fd8c0628002d4e28040872174f3/78718692713.pdfIn PDF document text
    • https://spheresignal.com/app/webroot/userfiles/files/55846200749.pdfIn PDF document text
    • http://growourworld.com/clients/83159/File/zatefedotodiluweduk.pdfIn PDF document text
    • https://evenimentecastel.ro/wp-content/plugins/super-forms/uploads/php/files/h8insodcka78e0f6bkvh45mapv/xobirufitutagokezipoz.pdfIn PDF document text
    • http://platcometals.com/images/file/gobivo.pdfIn PDF document text
    • http://www.skup.it/wp-content/plugins/formcraft/file-upload/server/content/files/160cb9f7c2e7ef---zovan.pdfIn PDF document text
    • https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f484d9fe23---65323769558.pdfIn PDF document text
    • http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608490a031329---sufulosotefito.pdfIn PDF document text
    • https://malabarmail.com/ckfinder/userfiles/files/29977453559.pdfIn PDF document text
    • http://kulturazebrak.cz/userfiles/26072217079.pdfIn PDF document text
    • http://movitecnic.fr/ressource/site-image/files/40584450267.pdfIn PDF document text
    • http://blpest.com/UserFiles/file/85798531527.pdfIn PDF document text
    • https://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608ab9c44f757---29590516145.pdfIn PDF document text
    • http://hoangduy.vn/vn/files/59310459032.pdfIn PDF document text
    • https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/16100c897ae55a---81484133535.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/0ao0ho8jvqb6su02hf0hm8aths/5699783590.pdfIn PDF document text
    • https://africanresearchcenter.com/userfiles/file/zixazuluxaxe.pdfIn PDF document text
    • https://indacphuc.com/wp-content/plugins/super-forms/uploads/php/files/3gadcbgbv8dh4kle115h0ilshk/povokenageseduzamobavila.pdfIn PDF document text
    • http://floral-design-lindgens.de/userfiles/file/25653589476.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f769.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF769 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010f80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F80 10668 bytes
SHA-256: 6f7283d65daba664c5eb80abd8ad4a2a908a66405da4db91602749e50f6c01f5
font_02_sfnt_off000127d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127D1 16688 bytes
SHA-256: a1ab1222007c2b4a4e934c95f12479a0cf38bd69368d9365808adcd09ee8fa6d