Malicious PDF — malware analysis report

Static analysis result for SHA-256 00e6e954b743ae89…

MALICIOUS

PDF

73.8 KB Created: 2021-09-18 14:20:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 64113e53103901694718e947ef10e2ae SHA-1: f507d1ee8f5044cc40521a8da806a6d23e6f8734 SHA-256: 00e6e954b743ae89ad6f502dcf880efdfb9d683e8aa24a3ccf929676f7b82636
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a large number of external URIs, many of which point to disposable domains. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to phishing or malware download sites. The embedded JavaScript is likely used to facilitate the redirection or exploit vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://fitsiluet.cz/data/file/telapirividiredomi.pdf In PDF document text
    • http://sys-svinding.dk/userfiles/file/vupikelazolejefuzopit.pdfIn PDF document text
    • http://plusk-car.com/js/upload/files/67803262519.pdfIn PDF document text
    • https://miraclechuppahs.com/userfiles/file/mavemigegowusinogufedolim.pdfIn PDF document text
    • http://plantessentialoil.com/upload/files/44451671330.pdfIn PDF document text
    • http://talcmanagement.com/uploaded_files/userfiles/files/88852499577.pdfIn PDF document text
    • http://blankheich.de/images/uploads/file/29225083488.pdfIn PDF document text
    • http://lube-stc.com/ckfinder/userfiles/files/83965329620.pdfIn PDF document text
    • http://solmoda.it/userfiles/files/57332103097.pdfIn PDF document text
    • http://www.bufolari.com/public/immagini/file/63539357799.pdfIn PDF document text
    • http://jiangsutravel.kr/userfiles/files/20210902_190119.pdfIn PDF document text
    • http://hoteldarim.ir/basefile/hoteldarimir/files/tigufatodixo.pdfIn PDF document text
    • http://fotosvatba.net/userfiles/file/tudesigodigixiz.pdfIn PDF document text
    • http://broadgatecapital.com/userfiles/file/91396743856.pdfIn PDF document text
    • https://apexsafetyproducts.com/ckfinder/userfiles/files/gozagozugexifoza.pdfIn PDF document text
    • http://www.espace-hotelier.com/ckfinder/userfiles/files/37993033801.pdfIn PDF document text
    • http://parejalecaros.com/adjunto/upload/fck/files/49100973861.pdfIn PDF document text
    • http://csaladiegyteruautok.hu/userfiles/files/gisejesulog.pdfIn PDF document text
    • http://baove24h.org/upload/files/najigegabibifol.pdfIn PDF document text
    • http://skisun.it/userfiles/files/42263893597.pdfIn PDF document text
    • http://kool-house.com/upload/editor/file/67253505632.pdfIn PDF document text
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133b56302712---kaxezubo.pdfIn PDF document text
    • http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1613f51945a745---67506460883.pdfIn PDF document text
    • http://hit-air.pro/ckfinder/userfiles/files/40773559552.pdfIn PDF document text
    • http://geodavidepini.it/userfiles/files/jivavujopuj.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=how+to+use+wps+wpa+tester+in+android+9+without+rootPDF 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_off0000bc2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC2E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d445.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD445 10788 bytes
SHA-256: 372d0af9eea51f5f986bd08cff42248fd884d568266a94cf75b85df55067e898
font_02_sfnt_off0000ed16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED16 17080 bytes
SHA-256: 04a7375e38a9c961d8cbee38bcab6f8b473492a537cbe0089df813edcb6b994b