Malicious PDF — malware analysis report

Static analysis result for SHA-256 eeb8cb50f5d65f3f…

MALICIOUS

PDF

84.1 KB Created: 2021-09-14 18:50:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 078e052b5f4d725c1b2c5238bb80cc17 SHA-1: dfc07720dbbf0b24ad3116baf31fa58ca71be4a5 SHA-256: eeb8cb50f5d65f3f85e815460b172897ef194a89a4801b6867c6561f23c20a62
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded JavaScript stream and numerous external URIs, indicating a phishing or redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The presence of JavaScript points towards an attempt to execute malicious code or redirect the user to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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 http://vincityhomes.vn/wp-content/plugins/super-forms/uploads/php/files/eeu3cui1fotebbina72r7v6kfs/22877786123.pdf In PDF document text
    • https://somos.co/dleyes/admin/fotos/file/pupez.pdfIn PDF document text
    • https://vietnam-pump.com/userfiles/file/47880560703.pdfIn PDF document text
    • https://bellcera.60km.com/upload/files/judofinalopuzozekidabipo.pdfIn PDF document text
    • http://www.polni.si/Images/files/pijijodaxegimesatumanigab.pdfIn PDF document text
    • https://jokerprod.net/userfiles/file/69276446735.pdfIn PDF document text
    • http://dongamold.com/fckeditor/upload_files/file/lugudijirelanuketa.pdfIn PDF document text
    • http://autosoftware.company/autoresponders_images/files/904884133.pdfIn PDF document text
    • https://semot.com/Store/userfiles/file/bomov.pdfIn PDF document text
    • http://testsitehq.com/ckeditor-ckfinder-integration/uploads/files/gabamakedadanipitu.pdfIn PDF document text
    • http://schokoladenbrunnen.de/idata/24735198538.pdfIn PDF document text
    • https://www.sensiblemachines.com/ckfinder/core/connector/php/files/59066934782.pdfIn PDF document text
    • http://okeefesreef.com/ckfinder/userfiles/files/19464300626.pdfIn PDF document text
    • http://dytac.hk/userfiles/woxojizesogefe.pdfIn PDF document text
    • https://www.sensormaticltd.com/app/templates/js/ckfinder/userfiles/files/26457322338.pdfIn PDF document text
    • http://toflight.mobi/attachment/ckeditor/files/9d6d3a6a674aabc6b227b0873c47d7ee.pdfIn PDF document text
    • http://www.ccengis.be/applications/ckeditor/addons/ckeditor/ckfinder/userfiles/files/31563627892.pdfIn PDF document text
    • https://slotpt2.com/contents/files/dotetoseritojatagomib.pdfIn PDF document text
    • https://canevastoilestjean.com/upload/editor/file/dikuro.pdfIn PDF document text
    • http://eca.or.th/ckfinder/userfiles/files/65166609095.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=igo+primo+android+let%C3%B6lt%C3%A9s+ingyenPDF link annotation
    • 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_off0000e15e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE15E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f975.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF975 11168 bytes
SHA-256: 1fdc3df329bb0e1b89e562a1d18b5005964694625c47ed5cc3b7910e52ae1d46
font_02_sfnt_off000112ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112AE 19084 bytes
SHA-256: 8fa64d736f53a6fee6b423ec058b03a2a3d8a882d623d9f226105d11c0f4a617

Open this report in the interactive analyzer, or submit your own file for analysis.