Malicious PDF — malware analysis report

Static analysis result for SHA-256 5698f90fff8f84f3…

MALICIOUS

PDF

73.6 KB Created: 2021-03-18 07:31:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: f15694bc47b5fca631aca26572feb72c SHA-1: 1d2a05739ca4f0486f0573474d949d1a52b89d49 SHA-256: 5698f90fff8f84f334777891889536fcb50618711d4d58ec8063fe895d34725d
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9283

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://jumiwimov.ru/award?keyword=swedish+language+for+beginners+pdf PDF link annotation
    • https://dabefetuxof.weebly.com/uploads/1/3/5/3/135320161/rotaje_vagovoneka.pdfIn PDF document text
    • http://igonlinesupport.com/sabrina_claudio_belong_to_you_freex7cgg.pdfIn PDF document text
    • https://cdn.sqhk.co/lusimalifa/nZje9he/fexujanizetexo.pdfIn PDF document text
    • http://kutakelipaxeb.22web.org/5293072171.pdfIn PDF document text
    • https://cdn.sqhk.co/tigoxexuda/fhYjdYp/go_dog_go_ball_launcher_reviews.pdfIn PDF document text
    • https://benefirezunaxo.weebly.com/uploads/1/3/4/8/134864331/26923a18988d7.pdfIn PDF document text
    • http://present-mag.ru/monaxodiub2jj.pdfIn PDF document text
    • http://miwipagodu.22web.org/black_and_decker_easyfeed_weed_eater_manual.pdfIn PDF document text
    • http://granitmetrospecstroy.ru/32742061362atlon.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cef8af8d-7071-4339-ac50-fc417d371010.filesusr.com/ugd/a89196_cf4bb236bf5648148d855399b32ae521.pdf?index=trueIn PDF document text
    • https://aabf49e0-5477-4fd2-8456-a986ef8f2a87.filesusr.com/ugd/9e14ca_69b742a0694242dea4464bd24b899b3e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed88477b-8f44-4d22-b908-295003fb05f3/83981199544.pdfIn PDF document text
    • http://zowujobosega.rf.gd/fisinesisimurebekizala.pdfIn PDF document text
    • http://zosutifajo.rf.gd/android_room_db_version.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61300ed8-56c9-4255-a04a-54a389bcae10/35999926367.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011742.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11742 5636 bytes
SHA-256: d2a5e41daf8b179ff0416349ca5dbc995f02119d510898a01f89aeeb692830fc