Malicious PDF — malware analysis report

Static analysis result for SHA-256 60352e56baa28bf2…

MALICIOUS

PDF

73.2 KB Created: 2021-09-13 02:12:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 0522688d4a5eccd90215da00b997f47e SHA-1: b629bcd070738c3bd9e61015110690ffd61f9bb9 SHA-256: 60352e56baa28bf2306d3941d551a66cc29bb173a2f98cdd716d52744b72fe74
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, many of which point to disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious redirection tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://wastran.ru/uplcv?utm_term=vodacom+pay+as+you+go+data+prices PDF link annotation
    • https://truongthanhco.vn/webroot/img/files/zeworofezusutafokapure.pdfIn PDF document text
    • https://scalping.ir/data/files/file/72820624986.pdfIn PDF document text
    • https://globaltranslation.com/demo/global_translation/beta/userfiles/files/86579988579.pdfIn PDF document text
    • http://nscenter.cn/upload/files/54329727358.pdfIn PDF document text
    • http://studiospazioambiente.it/userfiles/files/46254533632.pdfIn PDF document text
    • https://maintogelonline.info/contents/files/nusinabitojajap.pdfIn PDF document text
    • http://banghetretunhien.com/media/ftp/file/36800086913.pdfIn PDF document text
    • https://photographerin.agency/wp-content/plugins/super-forms/uploads/php/files/ddior6etavjnvgppusd9tb6256/93947311327.pdfIn PDF document text
    • https://gancza-yacht.pl/userfiles/file/61386891251.pdfIn PDF document text
    • https://www.agencesramos.com/ckfinder/userfiles/files/17963258866.pdfIn PDF document text
    • https://nikoljski.com/ckfinder/userfiles/files/58440049293.pdfIn PDF document text
    • http://flyingwedge.com/uploads/assets/file/37386571223.pdfIn PDF document text
    • http://24hnbc.com/assets/ckfinder/core/connector/php/uploads/files/79261780273.pdfIn PDF document text
    • https://condicionamentofisico.com/arquivos/file/7037721009.pdfIn PDF document text
    • https://jungleflightchiangmai.jungle-flight.com/Uploads/files/52140467833.pdfIn PDF document text
    • http://itnetworkconsultingsf.com/helpdesk/app/webroot/img/userfiles/files/92397030369.pdfIn PDF document text
    • http://chaukitchen.com/uploads/files/40941959713.pdfIn PDF document text
    • http://zvezda-rostov.ru/ckfinder/userfiles/files/91900564460.pdfIn PDF document text
    • http://madmojo.com/fckupload/file/jubeximijuxod.pdfIn PDF document text
    • https://www.shipgo17.com/plugin/ckeditor/ckfinder/userfiles/files/nevanokinuvujazebun.pdfIn PDF document text
    • http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/16137c6b975401---75941671801.pdfIn PDF document text
    • http://millecolori.it/images/file/jugoxarewedeb.pdfIn PDF document text
    • http://sportingfoundation.com/uploads/file/91381617959.pdfIn PDF document text
    • https://everestart.com/images/stories/file/35230154193.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_off0000b9df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9DF 10888 bytes
SHA-256: a918b9ed00a388109ba5052fb8a7ea6bda3390cfb05da768dd38b9604d2f9aef
font_01_sfnt_off0000d2ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2ED 16924 bytes
SHA-256: b1d6aefcf8bb366c260c53ae5aee819af06864fccadf4cc693d57bfc7dd37399
font_02_sfnt_off0000ff29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF29 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1