Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e9a535cbbbcf427…

MALICIOUS

PDF

57.5 KB Created: 2021-09-18 11:00:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: 6149e5db693e38a3b6ae379d36382095 SHA-1: 164d4a090ad521055ca5303eaf46089a9ed2f28a SHA-256: 2e9a535cbbbcf4277f8d686816952d2db3e2e9094df513aa75a754b83b0047bc
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs pointing to external domains, many of which are identified as part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The presence of external URIs and the link farm heuristic suggest the document's primary purpose is to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7666

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://synerhu.ru/uplcv?utm_term=wallpaper+for+android+4k PDF link annotation
    • https://kar360.com/resimler/files/99983319410.pdfIn PDF document text
    • https://teamcode.net/upload/files/36207628207.pdfIn PDF document text
    • http://piscesappliances.com/userfiles/file/36575978027.pdfIn PDF document text
    • https://airbays.com/userfiles/file/42391954392.pdfIn PDF document text
    • http://etre-belle.su/images/file/79151509572.pdfIn PDF document text
    • http://cu-mbc.com/ckfinder/userfiles/files/69496893823.pdfIn PDF document text
    • https://fruitssupplier.com/app/webroot/img/files/wavefamilaba.pdfIn PDF document text
    • http://bretagne.annuaire-regional.com/ckfinder/userfiles/files/widijofesewadal.pdfIn PDF document text
    • http://samuiluxurytravel.com/Uploads/file/71371870923.pdfIn PDF document text
    • http://enjoybowlramenandpoke.com/uploads/files/97963578088.pdfIn PDF document text
    • https://expobar.vn/app/webroot/files/images/pages/files/3024086781.pdfIn PDF document text
    • http://aallergy.friend-match.com/upload/files/45465932310.pdfIn PDF document text
    • http://ahkjt.com/upfile/file/77446420217.pdfIn PDF document text
    • http://bloomx.com/sites/all/sites/bloomx.com/files/28228444299.pdfIn PDF document text
    • http://stavebnevyrobky.sk/www/upload/files/sofipigirodexuzofazizogun.pdfIn PDF document text
    • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/usrq8g8bkkrsi02ig6392mdr6a/fikarojavu.pdfIn PDF document text
    • https://floraplant.gr/FCKeditor/userimages/file/guzekub.pdfIn PDF document text
    • http://szpitalstrzelin.pl/userfiles/files/gerul.pdfIn PDF document text
    • http://radyoislam.com/resimler/files/21455331241.pdfIn PDF document text
    • http://enjoy.sk/editor_uploads/system/files/98623553844.pdfIn PDF document text
    • https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/5d003f178c4fc1813bb5fed5c2563418/26479966550.pdfIn PDF document text
    • http://prochem.vn/images/uploads/files/72549032760.pdfIn PDF document text
    • http://wangguanhardware.com/userfiles/file/60765458323.pdfIn PDF document text
    • http://www.itidharamshala.in/images/uploads/files/28123560063.pdfIn PDF document text