Malicious PDF — malware analysis report

Static analysis result for SHA-256 feeab05a4c3d35ee…

MALICIOUS

PDF

69.2 KB Created: 2021-09-27 19:13:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: 2835ba4d60d5a50d51743749c61fb94d SHA-1: b78d664363f8686275cbd100893bf36f587f83cd SHA-256: feeab05a4c3d35ee36ae96253d723cde511faaaf32740af2a6a612cc1b812c35
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a large number of external links, many of which point to disposable domains. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to trick users into downloading malware or visiting phishing sites. The embedded JavaScript is likely used to facilitate the redirection or download process.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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=dead+effect+2+mod+apk+download PDF link annotation
    • http://fewo-spreewald-schoetzigk.de/brandenburgtag/img/editor/file/wupanaxerebaluxiri.pdfIn PDF document text
    • http://gocoachfox.com/userfiles/file/tefiratamaruto.pdfIn PDF document text
    • http://redskap.ru/userfiles/file/nifulexomebugema.pdfIn PDF document text
    • https://al-wesam.com/userfiles/files/dibigixogikukidogefogiboz.pdfIn PDF document text
    • http://andersonlawdecorah.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/meforuxonubetojosoperi.pdfIn PDF document text
    • https://discovery99.com/userfiles/file/32907471857.pdfIn PDF document text
    • http://camel-republic.com/media/userfiles/files/62061212805.pdfIn PDF document text
    • https://bushregenerators.com/userfiles/files/zopulodogemakolitaw.pdfIn PDF document text
    • https://takipbizde.com/calisma2/files/uploads/74292142641.pdfIn PDF document text
    • https://growmytruck.com/wp-content/plugins/super-forms/uploads/php/files/af30a7d1fd34ba0b0c3f30d1ee107856/84306231343.pdfIn PDF document text
    • https://eatorhours.org/e-bussiness/fckimages/file/67634432284.pdfIn PDF document text
    • http://daimarconstrucciones.com/images/admin/file/xosapegozoluradaduzatidev.pdfIn PDF document text
    • http://idroter.org/userfiles/files/58794645545.pdfIn PDF document text
    • http://privateeducation.sg/verzsape/demo/upload/admin/files/kadakifazaxalumekusekuken.pdfIn PDF document text
    • http://ucokampen.com/media/files/13501511643.pdfIn PDF document text
    • http://medicapoland.pl/uploaded/file/27110530044.pdfIn PDF document text
    • https://renfrewareahealthvillage.ca/ckfinder/userfiles/files/betebopuxonosu.pdfIn PDF document text
    • http://bezagsecurity.cz/userfiles/zevijalaxurefik.pdfIn PDF document text
    • http://www.creativitaecomunicazione.it/js/lib/ckfinder/userfiles/files/36660477398.pdfIn PDF document text
    • http://www.johnknox.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16135a5ccbb58d---kimemolaj.pdfIn PDF document text
    • https://www.sistemkabin.com/ckfinder/userfiles/files/wifudig.pdfIn PDF document text
    • http://sunriverps.com/data/editor/file/87205821102.pdfIn PDF document text
    • http://augustaelectricalwork.com/editorData/file/60882717666.pdfIn PDF document text
    • http://brukikostka.pl/uploads/page/file/65788530829.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_off0000b08b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB08B 15136 bytes
SHA-256: 92a76d125156afe3f0cb4d14c17ed211a6c3665b28a59ca6553aed421676c7bc
font_01_sfnt_off0000d688.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD688 10720 bytes
SHA-256: 2344548466c24dd0c5e2448cc9ebe4fc71f34dcbb27788c7aad6162b52b17ef5
font_02_sfnt_off0000ef47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF47 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1