Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe8418d4a5999af5…

MALICIOUS

PDF

84.1 KB Created: 2021-09-02 16:04:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: e56c288be6e1f0123176594e83c33bec SHA-1: 9440b7043f2d955c06918528ab482ebcdc680b4d SHA-256: fe8418d4a5999af50adf719adc535cb7e709571eb20e76376bed132db91a2ddb
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript and a significant number of external links, many pointing to compromised or disposable hosting. The heuristic 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' indicates a link farm pointing to compromised WordPress upload storage, suggesting an attempt to host malicious content. The embedded JavaScript likely facilitates the redirection or execution of further malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://khanikango.in/file/66076732288.pdf In PDF document text
    • http://desushibar.com/userfiles/file/99747679447.pdfIn PDF document text
    • http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/161213b1784ace---gibamupozaretaxulefe.pdfIn PDF document text
    • http://www.gabrielamaciel.net/images/content/file/pedagifuwomozaje.pdfIn PDF document text
    • http://www.xpresswedding.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f96a429b06d---vikimaxe.pdfIn PDF document text
    • https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/d644ce1ce5770994fa35a868b56b842d/suwuw.pdfIn PDF document text
    • https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/0ffeade2c4e9608d17cbe91e6b837ff6/65579733660.pdfIn PDF document text
    • https://cli-kh.com/uploads//files/202108050919075399.pdfIn PDF document text
    • https://lomasdelaweb.com/userfiles/2008.09/file/barolameriza.pdfIn PDF document text
    • https://ocvirapuato.com.mx/wp-content/plugins/super-forms/uploads/php/files/fab65b58b0d5011227bd2f6323cd8221/selifiwadokebebil.pdfIn PDF document text
    • http://china-zub.ru/userfiles/file/430938854.pdfIn PDF document text
    • http://arcomproltd.com/userfiles/file/lamozefojifud.pdfIn PDF document text
    • http://tofuyatogo.com/uploads/files/39912616425.pdfIn PDF document text
    • http://jenan.com/ckfinder/userfiles/files/17423122662.pdfIn PDF document text
    • http://www.aadhar-interior.com/userfiles/file/37328236244.pdfIn PDF document text
    • http://studioaba.net/userfiles/files/dupekofo.pdfIn PDF document text
    • http://amwordpress.org/wp-content/plugins/formcraft/file-upload/server/content/files/160bc0e821f5c5---91439182923.pdfIn PDF document text
    • http://ipceurope.eu/assets/file/15887459129.pdfIn PDF document text
    • https://soyana.de/js/ckfinder/userfiles/files/fitexularetipatorata.pdfIn PDF document text
    • http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d456029655---6783442124.pdfIn PDF document text
    • https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fdc8ba74e6d---26790610124.pdfIn PDF document text
    • https://dungcuruamui.com/wp-content/plugins/super-forms/uploads/php/files/hp85cdevgu2mssug95bdstobvr/18038986733.pdfIn PDF document text
    • http://epoxidice.ro/mm/file/rigovumabaw.pdfIn PDF document text
    • http://naasschoolofmotoring.ie/fckeditor/userfiles/file/94642476372.pdfIn PDF document text
    • http://vetranhtuong.info/luutru/files/wodelek.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=intro+to+complex+numbers+worksheetPDF 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_off0000e0fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0FB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f912.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF912 10856 bytes
SHA-256: 4c4ef60e1c2ae763d5e1641fcffa3455829e169a47d173b3344f7621d4314f3c
font_02_sfnt_off000111d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111D2 18600 bytes
SHA-256: 60aef39ce32895d900f5a0f1ce808eec9893d2fba617b7c596b208d988f40b92

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