Malicious PDF — malware analysis report

Static analysis result for SHA-256 eeade16ddbc50532…

MALICIOUS

PDF

82.8 KB Created: 2021-09-09 09:02:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-04
MD5: 9987cff28bb262f9c8454ea2c0a2e5a0 SHA-1: 064cbd5c570ef6bff61cbe6b087433d3055b4a50 SHA-256: eeade16ddbc505324887a532001e185ddeffe20b841cef696281a92d51254f47
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and contains embedded JavaScript. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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://huntic.ru/uplcv?utm_term=best+free+movies+firestick PDF link annotation
    • http://mcap.cz/images/uploadedimages/file/16010008956.pdfIn PDF document text
    • http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/16130d596ef426---1983068285.pdfIn PDF document text
    • https://marupyara.com/fotos/userfiles/file/ladebuzepepepusufejuregi.pdfIn PDF document text
    • https://shiprapublication.com/uniformkontakt/userfiles/image/files/95985275831.pdfIn PDF document text
    • https://vegastel.eu/components/com_mijoshop/opencart/image/data/files/pivowaw.pdfIn PDF document text
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16133525103168---kumakad.pdfIn PDF document text
    • https://ajansnigde.com/resimler/files/duferadozuwaban.pdfIn PDF document text
    • http://cachnhietcacham.vn/Images_upload/files/29298164037.pdfIn PDF document text
    • http://cpgny.com/userfiles/files/tijenipinipawiligosiko.pdfIn PDF document text
    • http://prochem.vn/images/uploads/files/bugixo.pdfIn PDF document text
    • http://ncdesign.it/userfiles/files/5020780919.pdfIn PDF document text
    • http://garagehayashi.com/js/upload/files/wafalupomitesox.pdfIn PDF document text
    • https://lockerova.eu/admin/upload/documents/zavogiwewomezafojutadax.pdfIn PDF document text
    • https://braus.uz/images/shared/file/golumivosuvera.pdfIn PDF document text
    • http://aan.kz/ckfinder/userfiles/files/10841337029.pdfIn PDF document text
    • http://vetusmeter.com/images/upload/File/76938925240.pdfIn PDF document text
    • http://johndanton.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/3308309403.pdfIn PDF document text
    • http://barrybusiness-crm.com/ressource/devis-photo/files/35741304769.pdfIn PDF document text
    • http://knipia.com/userfiles/file/39653806131.pdfIn PDF document text
    • https://wittnebel.dk/file/vumof.pdfIn PDF document text
    • http://autowagon.it/userfiles/files/wewutalanamomar.pdfIn PDF document text
    • http://heatexchangersolution.com/upload_fck/file/2021-9-2/20210902231209962786.pdfIn PDF document text
    • http://www.mmalappeenranta.com/tiedostot/files/34362003901.pdfIn PDF document text
    • http://liga-stf.ru/i/upload/files/35080727691.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_off0000de75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE75 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f687.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF687 18732 bytes
SHA-256: e08004423f9cc98fc969febbf33ea3a0f8a0ba7d3cb50ea998a18c4fafc7b121
font_02_sfnt_off0001261f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1261F 10396 bytes
SHA-256: 8f7cd5714c9bb9f4641b977f142d2d0e28b35b7f879a855c787e20b19d556120

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