Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e596c9ad60b002d…

MALICIOUS

PDF

82.0 KB Created: 2021-09-11 06:15:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 4f8ea19b16f2fb794db15b16b1d7ab52 SHA-1: 67e2a9a49ee9d262f81d649193bb71e5074207a7 SHA-256: 0e596c9ad60b002d814ba001769a65190c92767c595c7866710078a5ed626d69
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged as a link farm. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it is designed to redirect users to potentially harmful sites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 5

  • 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.
  • 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://hurghadalife.net/userfiles/files/sositagokoniziteson.pdf In PDF document text
    • http://gojjang.com/uploads/files/wukagegebukazabot.pdfIn PDF document text
    • https://www.renfrewareahealthvillage.ca/ckfinder/userfiles/files/57191123701.pdfIn PDF document text
    • https://ventsistem-bg.com/userfiles/file/8305790694.pdfIn PDF document text
    • http://terezmisszio.eu/files/file/zetejunafumitujijulon.pdfIn PDF document text
    • https://ecpa.fr/uploaded/file/16608788198.pdfIn PDF document text
    • https://eetravel.net/file/sowezuxikewuludopekuwud.pdfIn PDF document text
    • https://1sis.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613358af42845---jezowavunujegosumatipub.pdfIn PDF document text
    • http://levne-pohary.cz/UserFiles/File/minigidupasunuxerukezi.pdfIn PDF document text
    • http://nieruchomosci-swidnica.pl/userfiles/file/depezomebozasag.pdfIn PDF document text
    • https://vsetinrally.cz/userfiles/file/2882091680.pdfIn PDF document text
    • http://dalboncostruzioni.it/userfiles/files/95724728343.pdfIn PDF document text
    • http://beergolfers.com/blog/images/file/98048756643.pdfIn PDF document text
    • https://wangwangcamp.com/uploads/files/202109010536176139.pdfIn PDF document text
    • http://standardamulet.com/files/files/fezatujamixudeloxuvidopet.pdfIn PDF document text
    • https://mmoxx.mn/userfiles/files/ranarusetuga.pdfIn PDF document text
    • http://uniradioweb.info/userfiles/files/92881017689.pdfIn PDF document text
    • https://vrindaindia.com/php/joseph/uploads/file/zarijunubi.pdfIn PDF document text
    • http://ntep2008.com/UserFiles/File/mivudomonevidonegufujebe.pdfIn PDF document text
    • http://xn--e1aazeoc7d.xn--p1ai/images/shared/file/gelimof.pdfIn PDF document text
    • http://squash-fitness.cz/userfiles/file/givuzodazopewikimuxejejaj.pdfIn PDF document text
    • http://dh-cell.net/ckfinder/userfiles/files/volosadajixufolafofufug.pdfIn PDF document text
    • http://kemnhapkhau.com/upload/files/41156858317.pdfIn PDF document text
    • https://propertiproperty.com/Uploads/userfiles/files/paloribixifuwo.pdfIn PDF document text
    • http://www.nagsa.es/ckfinder/userfiles/files/revafobefen.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=index+of+glee+season+1PDF 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_off0000da3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA3D 18744 bytes
SHA-256: 0e9213a55a96d8b10ff1a7d4c40d76f5e85bbf1fade84e3a062d0f298f1a5fec
font_01_sfnt_off00010b1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B1C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012333.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12333 10344 bytes
SHA-256: a5fbdbf9b400aab3da2148872ef5a089e9ce41e44d9e65da7bc8fe8f0fbfc5bf