Malicious PDF — malware analysis report

Static analysis result for SHA-256 faae4fc7f7c14966…

MALICIOUS

PDF

80.3 KB Created: 2021-09-16 00:10:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 665175fae3f088783248596a5208f082 SHA-1: 1bd13a66894ce3cfbf9e7dd26195137f4051bb84 SHA-256: faae4fc7f7c14966efc9572fde967087e912f54b01dbba6ad5fe08649327728c
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many pointing to disposable domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded JavaScript likely facilitates the download or redirection to a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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 http://meble-tk.pl/userfiles/file/petasutodufewapuzi.pdf In PDF document text
    • http://www.taylormadetc.com/siteadmin/ckfinder/userfiles/files/xovitevasinubizosojikebip.pdfIn PDF document text
    • http://iranjobex.com/cache/fck_files/file/22096134918.pdfIn PDF document text
    • https://nceptionsolutions.com/wp-content/plugins/super-forms/uploads/php/files/7c493c744387ffbedf4c63846d451856/98521845646.pdfIn PDF document text
    • http://klinok-saintp.ru/files/jobizupatijilutusuzase.pdfIn PDF document text
    • https://tdfstore.it/file/gajexuberonawixalofotek.pdfIn PDF document text
    • http://argyleliquidations.com/userfiles/files/lakipajoziwaposugolome.pdfIn PDF document text
    • http://peggylittlelawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/kizanaxebazapanepaloj.pdfIn PDF document text
    • http://yuemeism.com/uploadfiles/files/3164955778.pdfIn PDF document text
    • http://www.ville-civaux.fr/admin/js/ckfinder/userfiles/files/xodoponavefapesuba.pdfIn PDF document text
    • http://cctsw.net/whly/up_files/FCK/file/20210906_000812_137.pdfIn PDF document text
    • http://z-him.ru/userfiles/file/72242631487.pdfIn PDF document text
    • http://cerritos.songhakbbq.com/uploads/files/gukolujuraxelaluviwud.pdfIn PDF document text
    • https://gretajensen.com/ckfinder/userfiles/files/bowugutalitapafije.pdfIn PDF document text
    • http://imosa.asia/uploads/files/202109040513498987.pdfIn PDF document text
    • http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136a05be4cfe---8552622171.pdfIn PDF document text
    • http://vrtaspol.cz/klienti/devel/sneznerolby.cz/ckfinder/userfiles/files/lawitebaza.pdfIn PDF document text
    • http://twgo8.com/uploads/base/files/202109110444534406.pdfIn PDF document text
    • http://obkladlazby.cz/userfiles/file/54341790726.pdfIn PDF document text
    • https://lmcmanager.com/ckfinder/userfiles/files/jesufonekododusuf.pdfIn PDF document text
    • http://digitalqwerty.com/ckfinder/userfiles/files/54217981675.pdfIn PDF document text
    • http://dgelc.com/userfiles/file/20210914084539.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=best+free+m3u+playlistPDF 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_off0000d4cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4CB 10736 bytes
SHA-256: cdc8f6ea4637afda5954dd59479c33ad4a78f0c3c3ee1d29c9b1f41d72911d6d
font_01_sfnt_off0000ed90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED90 17872 bytes
SHA-256: 740dd7fa0f16b9eba2c26737d9cf91556728f56c5d3abdf2565ac3fbe86e89e4
font_02_sfnt_off00011bbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BBF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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