Malicious PDF — malware analysis report

Static analysis result for SHA-256 ced96c7086f7086f…

MALICIOUS

PDF

91.5 KB Created: 2021-09-13 20:03:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: c7f5194251cd4a7f1a6028de7e23b478 SHA-1: fe25a58b3914f46b3e1eef319b7e92f4364a364f SHA-256: ced96c7086f7086fb13717fa2325fc9d0b089b3453e1499bd63df5b33d2c3eae
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The ML classifier and ClamAV detection strongly indicate malicious intent. The PDF contains numerous embedded URLs pointing to a link farm, a common technique for distributing malicious content or conducting phishing. While no scripts were directly extracted, the PDF structure and heuristic firings suggest it's designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9935

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 http://refinerlink.com/userfiles/file/dabawenerusobiguxux.pdf In PDF document text
    • https://ezsprinting.com/userfiles/file/51274323196.pdfIn PDF document text
    • http://sasnowosielski.com/ckfinder/userfiles/files/movujixanafurekamivuwipil.pdfIn PDF document text
    • https://militarynetwork.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161354d40a3232---puzibafikawukusifex.pdfIn PDF document text
    • http://laxycoffee.com/upload/files/dezajopebirajid.pdfIn PDF document text
    • https://ikuseikyokai.jp/ckmedia/files/17230019953.pdfIn PDF document text
    • http://guoyangmoju.com/userfiles/files/rajuxizetajinedovu.pdfIn PDF document text
    • http://agataklimowska.pl/userfiles/file/91631857260.pdfIn PDF document text
    • https://podiummagazinenews.com/ckfinder/userfiles/files/76508718914.pdfIn PDF document text
    • https://ka-base.no/images_content/file/84763324842.pdfIn PDF document text
    • http://greenworx.eu/images/uploads/files/najofefadogulenimadavasez.pdfIn PDF document text
    • http://capri.lt/userfiles/files/57498654436.pdfIn PDF document text
    • http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/16135e0264db30---kafavum.pdfIn PDF document text
    • https://lazeo.nl/userfiles/file/72160147733.pdfIn PDF document text
    • https://eternalbliss.net/file/80391159046.pdfIn PDF document text
    • http://tecniagua.es/uploads/ckfinder/files/tuwiwitosijavarufegenex.pdfIn PDF document text
    • https://balticstroy.com/uploads/files/vuxawerimaxotot.pdfIn PDF document text
    • http://zeroseistudio.eu/userfiles/files/xumiditojexugoni.pdfIn PDF document text
    • http://olymp-kiev.com/temp/fckeditor/file/juzelejolekagaziposekiz.pdfIn PDF document text
    • http://vinhomeshaiphong.net/app/webroot/img/files/96364414996.pdfIn PDF document text
    • https://www.rosebankprimary.co.za/inc/ckfinder/userfiles/files/99166865497.pdfIn PDF document text
    • https://www.andreivieru.com/ckfinder/userfiles/files/jafipili.pdfIn PDF document text
    • https://proxus.nl/file/69713443938.pdfIn PDF document text
    • http://tagsu.com/attachments/fckattachments/file/dabuzofagalabigufetabarav.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=using+fake+gps+pokemon+goPDF link annotation
    • 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_off000100a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100A6 18344 bytes
SHA-256: a050012d5c52c72cdcffe2695fd13a43d725c9a2cafb779bca2fb1a02a0637ff
font_01_sfnt_off0001308a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1308A 10556 bytes
SHA-256: a399b30497c7f185cfa342b42bc276d5a5fdbd95317bf13ed6d75a261256a224
font_02_sfnt_off00014898.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14898 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.