Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8e5239544add3a1…

MALICIOUS

PDF

52.6 KB Created: 2021-10-01 10:57:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: e00f825b8d7d5c9f07bf7d41dad27b0c SHA-1: 175965587ff432bd78cc207981c91a6d141b5722 SHA-256: e8e5239544add3a16ab04f7f7a5aa6b18f2d2f0623caac0ab0f52115e9a6df50
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which are part of a link farm strategy hosted on disposable domains. Heuristics indicate a high likelihood of malicious intent, with ML and ClamAV flagging it as a phishing or trojan. The PDF structure and embedded links suggest an attempt to lure users to malicious sites, likely for phishing or scam purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8529

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://nomylo.ru/uplcv?utm_term=sore+muscles+after+gym PDF link annotation
    • http://matemotors.com/userfiles/file/72426337935.pdfIn PDF document text
    • http://lammensfilip.be/uploads/files/tegakovolasojozipi.pdfIn PDF document text
    • http://jmyhship.com/uploadfile/files/gikefuwiwonezopifi.pdfIn PDF document text
    • http://tatvideo.ru/ckfinder/userfiles/files/rimosozibanewepu.pdfIn PDF document text
    • http://24x7taazasamachar.com/assets/ckfinder/core/connector/php/uploads/files/26113532802.pdfIn PDF document text
    • https://senzedigicraft.com/wp-content/plugins/super-forms/uploads/php/files/1b2250613141599375cff5907a333b0b/wekona.pdfIn PDF document text
    • http://biswasi.com/userfiles/files/zoxemapaziduzod.pdfIn PDF document text
    • http://regmac.net/userfiles/files/41173304891.pdfIn PDF document text
    • https://angem.fr/userfiles/file/51458705580.pdfIn PDF document text
    • http://beming.com/ressource/site-image/files/25913140035.pdfIn PDF document text
    • http://myblindz.com/fck_user_files/file/girirarosisugaxunipekigiz.pdfIn PDF document text
    • http://rowadhr.com/app/webroot/upload/files/39802398872.pdfIn PDF document text
    • http://tumakuruvoice.com/tumkurvoice/ckeditor/ckfinder/userfiles/files/40854139903.pdfIn PDF document text
    • http://otoozevran.com/resimler/files/lisewuru.pdfIn PDF document text
    • http://stalmont.eu/userfiles/file/6385771620.pdfIn PDF document text
    • http://besttailor.info/ckfinder/userfiles/files/66445210886.pdfIn PDF document text
    • http://ros-grad.ru/fck_editor_files/files/64161468084.pdfIn PDF document text
    • http://edilgroupdigiovanni.it/userfiles/files/47075065092.pdfIn PDF document text
    • http://ylpcl.com/ckfinder/userfiles/files/selamifedafosanogug.pdfIn PDF document text
    • http://ledseoul.com/userData/board/file/81597288478.pdfIn PDF document text
    • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1614664af8b987---96314859764.pdfIn PDF document text
    • http://solyaris.pro/admin/ckfinder/userfiles/files/muwugelabujomuni.pdfIn PDF document text
    • http://kliknetezde.cz/admin/obrazky/file/74744933365.pdfIn PDF document text
    • 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_off0000b271.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB271 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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