Malicious PDF — malware analysis report

Static analysis result for SHA-256 48e221a2d20f01f3…

MALICIOUS

PDF

84.6 KB Created: 2021-09-09 02:51:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-01
MD5: 73e0239fa9b04b4974047ec2ec3873e6 SHA-1: 19621745e2b3923096e7bf886d29df51954abadc SHA-256: 48e221a2d20f01f38052eaa51c412beb52815dc406ee318ad2557db33714fcec
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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. Specific URLs and indicators for this sample are listed in the indicators section.

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://coretry.ru/uplcv?utm_term=download+tv+shqip PDF link annotation
    • http://hightopeducation.com/cms_uploaded/file/gavevigapuperi.pdfIn PDF document text
    • http://wasserentkalkung.at/ckfinder/userfiles/files/kagapexuki.pdfIn PDF document text
    • https://havilahbuilders.com/userfiles/file/busekonodu.pdfIn PDF document text
    • http://paulgraphics.paulsfashion.in/files/xepitor.pdfIn PDF document text
    • https://mcdelandes.ca/uploads/file/17477487363.pdfIn PDF document text
    • https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/526840e2c8729e18e39c4dea27a66bde/90864338301.pdfIn PDF document text
    • http://marasintl.com/public/ckfinderuploads/files/motozuloluganewixur.pdfIn PDF document text
    • http://logiccpacma.com/ckfinder/userfiles/files/gepozekolitogorimuso.pdfIn PDF document text
    • http://www.ville-dammarie.com/ckfinder/userfiles/files/38796728506.pdfIn PDF document text
    • https://piphoto.tw/uploads/files/202109070827309951.pdfIn PDF document text
    • http://mygiftltd.com/userfiles/file/7077843449.pdfIn PDF document text
    • http://lidaoxc.com/upload/files/10356951496.pdfIn PDF document text
    • https://rimi.sk/userfiles/file/xawumaxinezozumokipaveso.pdfIn PDF document text
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138494ce30c2---21004006212.pdfIn PDF document text
    • https://fiberglasssupplydepot.com/userfiles/file/30058841291.pdfIn PDF document text
    • http://hanasushi6.com/uploads/files/finobukodivaronotifad.pdfIn PDF document text
    • http://hitmet.slektenkaas.com/bilder/file/folib.pdfIn PDF document text
    • http://soluzionebenessere.eu/userfiles/files/94053377145.pdfIn PDF document text
    • https://lederstuhlshop.de/ckfinder/userfiles/files/82431691520.pdfIn PDF document text
    • http://tdvvietnam.vn/webroot/img/files/96649687853.pdfIn PDF document text
    • http://portamarioarchitetto.eu/userfiles/files/vuvufetujizoweju.pdfIn PDF document text
    • http://digitalpolicycouncil.com/imagenes/file/fanatasamudubuwajof.pdfIn PDF document text
    • http://studiotipaldo.com/userfiles/files/33824271702.pdfIn PDF document text
    • http://sendedianqi.com/upload_fck/file/2021-9-1/20210901200047109997.pdfIn PDF document text
    • http://playeasypiano.com/resources/fck_images/27085844085.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_off0000e50c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE50C 10556 bytes
SHA-256: 0afe724eb14dc4d9430c93ac1dda94dc6c37d414094c3e8e4a70dd362324bc1b
font_01_sfnt_off0000fcde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCDE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000114f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114F0 18304 bytes
SHA-256: db4a6917e7e73aec058eaaaa42058dd1b1963fdbd0196c76e065330ab474d772

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