Malicious PDF — malware analysis report

Static analysis result for SHA-256 47f0227fec49719b…

MALICIOUS

PDF

74.6 KB Created: 2021-09-18 20:48:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 3a5cf178625b7e1c4843f52a6ba92a3d SHA-1: ae2703c74c7c9be1428fe0ae585ff3e6b7c9f5d6 SHA-256: 47f0227fec49719be8be6a3028dbaf08259ab9b243992768c4719d8451f98f0b
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains numerous external URIs, with one specifically pointing to a URL containing 'free v bucks codes ps4 2020', suggesting a lure for phishing or scamming. The PDF's structure and embedded links indicate it's designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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://ketchas.ru/uplcv?utm_term=free+v+bucks+codes+ps4+2020 PDF link annotation
    • http://avesta-hmora.boj.se/uploads/userfiles/files/kijamolazogu.pdfIn PDF document text
    • https://kfk-dekoration.dk/images/uploadedimages/file/sosipidavuv.pdfIn PDF document text
    • http://bong-dem-long.org/upload/editor/files/29134297036.pdfIn PDF document text
    • http://futboltotal.net/images/files/legudunogewanugamoro.pdfIn PDF document text
    • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/16138079251b9b---wubabatokokigoko.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/161354ad66da93---jakewuzu.pdfIn PDF document text
    • https://oancora.com/ckfinder/files/38160291350.pdfIn PDF document text
    • http://palami.by/images/file/ridesunodalavaja.pdfIn PDF document text
    • https://xrtradingfeedback.com/cmsimages/file/xajisusodugupotaliv.pdfIn PDF document text
    • https://latgalesamatnieki.lv/files/file/pakurivi.pdfIn PDF document text
    • http://jyczgj.com/UploadFiles/file///2021091304571094.pdfIn PDF document text
    • https://www.hkha.com.hk/ckfinder/userfiles/files/xotiremifedepige.pdfIn PDF document text
    • http://sochisushi.nl/survey/userfiles/files/silot.pdfIn PDF document text
    • http://prime-standard.com/piceditor/file/79881169080.pdfIn PDF document text
    • http://quetthe.com/upload/files/49653322732.pdfIn PDF document text
    • http://kommunikator.nu/demo/userfiles/file///dinap.pdfIn PDF document text
    • http://stoka-saarlouis.de/userfiles/file/jidafifa.pdfIn PDF document text
    • http://e-sheremet.com/img/62976525731.pdfIn PDF document text
    • http://bargiel.com.pl/ckfinder/userfiles/files/51286772192.pdfIn PDF document text
    • https://superpackeg.com/userfiles/file/temovarujifuvidebafusuba.pdfIn PDF document text
    • http://kingbikeonline.com/images/upload/File/35188147650.pdfIn PDF document text
    • https://parlagame.com/calisma2/files/uploads/wukesa.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_off0000bc41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC41 10700 bytes
SHA-256: e70726b3194c1fb7d79347bf43cc5e72ead3700cabd066a4dd08410d2a448b9b
font_01_sfnt_off0000d4c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4C9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000ecdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECDB 18320 bytes
SHA-256: 5a7e119b889bf29e5365d57fccc0310917b99ea81eeb98b5802a36d73a94755a

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