Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3d46da8b3c9f62b…

MALICIOUS

PDF

69.5 KB Created: 2021-09-22 19:53:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 0d864596665b4ec5f59ebcac5cd0d5f7 SHA-1: 231a7ef8a969d087cf58336e255debbcbe4b1425 SHA-256: e3d46da8b3c9f62bb7a283ba4bf8bab14d894f0de20eeeecf3be0a7dcd152cf8
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with one heuristic specifically identifying it as a link farm designed to redirect users. The presence of external URIs suggests an attempt to direct the user to potentially harmful content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9130

Heuristics 4

  • 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
  • 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://agermag.ro/mm/file/fotikujesiga.pdf In PDF document text
    • https://mobisteelegypt.net/userfiles/file/gomufafek.pdfIn PDF document text
    • http://barrospizzadb.com/uploads/files/83912713966.pdfIn PDF document text
    • http://hurtglass.pl/upload/file/febegamivupebitolovajuku.pdfIn PDF document text
    • http://eternaseguros.net/files/files/71511753528.pdfIn PDF document text
    • http://kingkady.com/uploadfile/files/51283552171.pdfIn PDF document text
    • http://valentine.tutaylamhet.com/storage/ckfinder/files/3514625865.pdfIn PDF document text
    • http://bochkari24.ru/pic/file/denumasodobewenisofe.pdfIn PDF document text
    • https://m-astar.com/UserFiles/files/19017656797.pdfIn PDF document text
    • http://alexdisinfestazioni.com/userfiles/files/73791358625.pdfIn PDF document text
    • http://rc-mst.com/mst/_upload/files/5999740777.pdfIn PDF document text
    • http://bloomx.com/sites/all/sites/bloomx.com/files/damevojiwuzapipulajulumim.pdfIn PDF document text
    • http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/16145bc05575ab---jibajetoledimovemada.pdfIn PDF document text
    • https://bselink.com/userfiles/file/vudamas.pdfIn PDF document text
    • http://artgraf24.pl/userfiles/file/xivezazi.pdfIn PDF document text
    • http://boldogelet.hu/media/6693635852.pdfIn PDF document text
    • http://palestraarkadia.it/userfiles/files/tepevitowesovakega.pdfIn PDF document text
    • https://psystat.net/candyticket/uploads/page_images/files/50585559386.pdfIn PDF document text
    • http://netart.hu/userfiles/file/37795566836.pdfIn PDF document text
    • http://www.naturhalles.fr/fckeditor/userfiles/file/pixewuwi.pdfIn PDF document text
    • http://networkinglikepro.com/ckfinder/userfiles/files/17594375284.pdfIn PDF document text
    • https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/98fadb5dbc5ff2610f0b8c5cc9fe1294/buxufigesigo.pdfIn PDF document text
    • https://www.ccs-corporation.com/ckfinder/userfiles/files/zibemegotobopifizosul.pdfIn PDF document text
    • https://www.funes.gob.ar/ckfinder/userfiles/files/lipagorexobunofo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=messenger+video+recorder+app+for+androidPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e033.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE033 17232 bytes
SHA-256: 67d35f023ea9e2ad8f6fa91e6592b66cd8fdccc356f9de8451c91d98dba756ac

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