Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0688c99009357bc…

MALICIOUS

PDF

69.0 KB Created: 2021-09-26 18:55:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 2270c829ca193940fe503c9c1bb08af8 SHA-1: e08856b98e33749b0425fb59d79e0895d6350262 SHA-256: e0688c99009357bc6d2ab9d1a54f5e9bfc6fceaef54548a7dee29127b4f9aba2
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a large number of external URIs, many of which point to disposable domains and are likely used for phishing or distributing further malware. The ML classifier and ClamAV detection strongly indicate malicious intent, with the embedded JavaScript potentially executing malicious code or redirecting the user to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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=class+8+moral+science+book PDF link annotation
    • https://inprovitperu.com/ckfinder/userfiles/files/84124974998.pdfIn PDF document text
    • https://ichapps.com/ichapps/ckeditor-ckfinder-integration/uploads/files/fefawaz.pdfIn PDF document text
    • http://bivalyracing.hu/files/file/4448657805.pdfIn PDF document text
    • http://ohsongpharm.com/ckfinder/userfiles/files/32116186568.pdfIn PDF document text
    • http://arcos-eff.it/userfiles/files/57060784136.pdfIn PDF document text
    • http://ondamarinarest.com/upload/files/kuxalotidisi.pdfIn PDF document text
    • http://pattarasawat.com/ckfinder/userfiles/files/vukuzejirovemo.pdfIn PDF document text
    • http://exosportsante.fr/ckfinder/userfiles/files/24582672517.pdfIn PDF document text
    • https://fullmagicweekend.com/ckfinder/userfiles/files/xodemeniligen.pdfIn PDF document text
    • https://ycb.one/pro_pic/files/90112681730.pdfIn PDF document text
    • http://villapellegrino.it/userfiles/files/91289941176.pdfIn PDF document text
    • http://sjmhospital.org/files/js/ckfinder/userfiles/files/vizedobasov.pdfIn PDF document text
    • https://marblo.marblobaths.ph/app/webroot/img/files/22264146205.pdfIn PDF document text
    • http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613cdb8fd884d---96540851014.pdfIn PDF document text
    • http://dvif.fr/userfiles/file/35397472717.pdfIn PDF document text
    • http://graphicyazd.com/ckfinder/userfiles/files/51605208506.pdfIn PDF document text
    • http://ilksolar.com/Images/Media/files/5088406946.pdfIn PDF document text
    • https://lotusmarinevn.com/upload/files/73097337169.pdfIn PDF document text
    • https://angkoronetour.com/userfiles/file/mevasuja.pdfIn PDF document text
    • http://airzo.net/userData/board/file/38203668423.pdfIn PDF document text
    • http://pomelieagency.com/userfiles/files/74862017309.pdfIn PDF document text
    • http://adimhukuk.com/resimler/files/sisapelotefilibu.pdfIn PDF document text
    • http://radio6deenero.com/uploaded/files/tewokemolunigiv.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_off0000b03d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB03D 14800 bytes
SHA-256: 4c62d7d795615e8c12648e8b0500a46860d039877db701e0742f787ae1e5dfef
font_01_sfnt_off0000d56d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD56D 10764 bytes
SHA-256: c6fa79da43a84dc32300a5f00d24cc807a3e259a676ca56dd7e54e5197eb3d78
font_02_sfnt_off0000ee2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE2B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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