Malicious PDF — malware analysis report

Static analysis result for SHA-256 106eaf4a0cd698cc…

MALICIOUS

PDF

81.3 KB Created: 2021-09-13 15:05:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 957c9342b1f9c587525f72ae5db0905e SHA-1: dfb595874bec9a204ba9ebd3309993c895467927 SHA-256: 106eaf4a0cd698cc5389dddd9eec46a4c5ad6d77e8755a913cd712c1d1ab5925
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan threat. It functions as a link farm, containing numerous URLs pointing to compromised WordPress uploads and disposable hosting sites. These links are likely intended to redirect users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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
  • 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.
  • 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://coretry.ru/uplcv?utm_term=ayana+komodo+resort+harga PDF link annotation
    • http://vipnjl.com/userfiles/files/19639739758.pdfIn PDF document text
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/161383b0b824c0---nozasujelunarewajofofa.pdfIn PDF document text
    • https://veterinarycarefoundation.org/userfiles/file/86058473035.pdfIn PDF document text
    • http://praconsulgroup.ru/pict/file/waxiwet.pdfIn PDF document text
    • http://romento.com/uploaded_files/userfiles/files/katijidoz.pdfIn PDF document text
    • http://jungvassar.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/57321268760.pdfIn PDF document text
    • http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/161391b68c59e2---89286990078.pdfIn PDF document text
    • http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136cf5c5d391---jowolozexu.pdfIn PDF document text
    • https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613eee9b8d7e6---vejidosadozowib.pdfIn PDF document text
    • http://mertcelikkapi.com/userfiles/file/22203554360.pdfIn PDF document text
    • http://7profi.net/userfiles/file/posaw.pdfIn PDF document text
    • https://fablab808.com/nbloom/fckuploads/file/natasoriguzuji.pdfIn PDF document text
    • https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/434b7350aa6a3ba14ddcc3e1332acb54/42408868670.pdfIn PDF document text
    • http://fpole.ru/sadm_files/tagaraximejewipamidazuji.pdfIn PDF document text
    • https://tidymoney.com/ckfinder/userfiles/files/1971613483.pdfIn PDF document text
    • http://rebeccafantarchitetto.it/userfiles/files/7355375629.pdfIn PDF document text
    • http://geoodwierty.pl/files/file/nodogodamobog.pdfIn PDF document text
    • https://kuni.ro/app/webroot/files/userfiles/files/dotifoxexetesupexudelux.pdfIn PDF document text
    • https://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/aca75067020c9e59734590c3f7c9bd1c/fikonerezesimikujawok.pdfIn PDF document text
    • https://metricgroup.it/uploads/file/30537914988.pdfIn PDF document text
    • https://jaurrieta.net/USERFILES_JAURRIETA/files/46064178598.pdfIn PDF document text
    • http://profstil.az/userfiles/file/92203944846.pdfIn PDF document text
    • http://lnaixi.com/userfiles/file/20210906155251_1078761237.pdfIn PDF document text
    • https://digiconelectronics.com/media/99718832866.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB73 10744 bytes
SHA-256: d8aa3d1e03050aff6d58486921de3dc09eabcb52ec278577229360edbc998186
font_01_sfnt_off0000f3d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D9 16912 bytes
SHA-256: e9d0bac8c04e7715995c9d78ae17570121b4902a90c3d70242ab5f258cfa2d96
font_02_sfnt_off00011f91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F91 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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