Malicious PDF — malware analysis report

Static analysis result for SHA-256 8dfddbf38de67ca9…

MALICIOUS

PDF

70.1 KB Created: 2021-09-19 11:08:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 43a899a7abde9e59bac15d3c4e819fdf SHA-1: b435aff8e20d80d3a8d53ae9b68360f789e976f7 SHA-256: 8dfddbf38de67ca991f52ab053eaebf9b1a549942c3f0b1f64a8cbfffe3f9699
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://garglob.ru/uplcv?utm_term=deadeye+derby+android+download PDF link annotation
    • https://confidence-ist.com/ckfinder/userfiles/files/lolisodanujotipepipetobe.pdfIn PDF document text
    • https://epgeptech.hu/ckfinder/userfiles/files/vedesemudaxo.pdfIn PDF document text
    • http://martonaroniskola.net/userfiles/file/mofazij.pdfIn PDF document text
    • https://aihr-iadh.org/uploads/FCK_files/file/75717961533.pdfIn PDF document text
    • https://indirimlipin.com/calisma2/files/uploads/vexumu.pdfIn PDF document text
    • http://misosmile.com/upload/editor/files/xawevuxozewivaza.pdfIn PDF document text
    • https://solturism.ro/images/file/jeguka.pdfIn PDF document text
    • https://deycaterers.com/ckfinder/userfiles/files/53528896864.pdfIn PDF document text
    • http://condominiobrisasdelnorte.com/userfiles/file/tulibitadigebul.pdfIn PDF document text
    • http://princeworldwide.com/multimedia/userfiles/file/57575647915.pdfIn PDF document text
    • https://kohphanganhotelandtour.com/userfiles/file/gapipijupano.pdfIn PDF document text
    • http://kocavietnam.com/upload/files/zexixob.pdfIn PDF document text
    • https://presstone.hu/userfiles/file/40132708586.pdfIn PDF document text
    • http://becucci.it/userfiles/files/pujotesuzugelowufupiv.pdfIn PDF document text
    • https://habibitours.net/ckfinder/userfiles/files/pokiju.pdfIn PDF document text
    • http://ukrfirework.com/images/file/51756274385.pdfIn PDF document text
    • https://surupaceanu.ro/ckfinder/userfiles/files/19826023769.pdfIn PDF document text
    • https://swift-tw.com/lcc/upload/files/rapubesid.pdfIn PDF document text
    • https://kapefashion.com/files/files/kezujokopikemexatetube.pdfIn PDF document text
    • http://montagnobozzone.it/userfiles/files/lokiropetedotom.pdfIn PDF document text
    • http://cdmvt.cz/sites/default/files/xumovogosag.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_off0000b015.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB015 16672 bytes
SHA-256: 2273a62668ff823050d90cc3136eda2f26b5604bba6f6d949e5ef26d87711cca
font_01_sfnt_off0000db82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB82 10316 bytes
SHA-256: db76515367dc95b12ae6e99b91532174fb8a92ff5f71c2a8b8804194137d40e0
font_02_sfnt_off0000f2d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2D8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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