Malicious PDF — malware analysis report

Static analysis result for SHA-256 2337ea03d46e9c3e…

MALICIOUS

PDF

95.4 KB Created: 2021-07-02 05:17:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 89bcf3b576f962af16a4eb6091be7515 SHA-1: 22353b17e9e067ac1e108c5b48e53a5102aa6c00 SHA-256: 2337ea03d46e9c3e9ac8348b538c68b7640a7dd4434b3b4393106aad173a3aaf
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs pointing to compromised CMS uploads and disposable hosting domains. The presence of these links suggests the document is designed to lure users to external sites, potentially for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/oa15ie0n46re08nionk19ad077/jikemisugidomebabetutup.pdf In PDF document text
    • http://kaizenlife.com/ckfinder/userfiles/files/65357968436.pdfIn PDF document text
    • https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/2ba80fef08ed0cbe88b4aa137f8b4be1/78778801258.pdfIn PDF document text
    • http://villaturri.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092ab2e8a394---supabarofediwaton.pdfIn PDF document text
    • https://jagamimpi.com/contents//files/26161126254.pdfIn PDF document text
    • https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/8bbfad0cd925febc4c7edb53294cba89/60369988249.pdfIn PDF document text
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b8005f70e3d---53233880415.pdfIn PDF document text
    • http://jfac.kr/ckfinder/userfiles/files/67666284405.pdfIn PDF document text
    • http://bpsstudio.hu/uploads/53964461818.pdfIn PDF document text
    • https://asset-books.com/userfiles/file/sazok.pdfIn PDF document text
    • https://meganimal.pt/site/upload/file/517298703.pdfIn PDF document text
    • http://www.megasaludips.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084cd26cdbe5---nesezujidudipi.pdfIn PDF document text
    • https://www.tctnanotech.com/wp-content/plugins/super-forms/uploads/php/files/d1875c1481df5ba107aaf814c822fed7/depewolemedatetewuran.pdfIn PDF document text
    • https://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079440b93ccf---botozubusowosogilesebo.pdfIn PDF document text
    • http://alemotta.com/resources/original/file/9363362713.pdfIn PDF document text
    • http://botanicgardenscafe.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b0a84f53812---26721213209.pdfIn PDF document text
    • http://littlepearlspublishing.in/data/eimages/file/doledazem.pdfIn PDF document text
    • http://www.tekkoo.net/images/library/File/lewudojoretewutanibupot.pdfIn PDF document text
    • http://candientushinko.com/images/file/13340233463.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/160b215193d162---63717838616.pdfIn PDF document text
    • https://lapalettedesarts.fr/gestion/file/22823018833.pdfIn PDF document text
    • http://umrllc.com/userfiles/files/66427154095.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=mastering+the+sat+critical+reading+test+pdfPDF 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

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_off00011310.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11310 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00012b27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B27 10772 bytes
SHA-256: 837f1721e22d105c7b22281b921dda8596f7a4f171269c9e503dbb3c01c7917e
font_02_sfnt_off000143a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x143A5 17128 bytes
SHA-256: a7f60ac64318b0df087a3f4445e38fca38ef7be99d60743d45b0c99d0f8ed49d

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