Malicious PDF — malware analysis report

Static analysis result for SHA-256 73bd77eca4358224…

MALICIOUS

PDF

47.7 KB Created: 2021-09-28 04:57:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 978178c6fd8754fee6780fc216977f38 SHA-1: ed6ed82db0177c9f1f973234ee1d18dbb5961048 SHA-256: 73bd77eca4358224ac1fb12b7ac749683713310c640f953e92be8c919590e1d0
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains numerous embedded URLs pointing to various domains, many of which appear to be part of a link farm designed to obscure the ultimate destination. The 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic specifically identifies this pattern, suggesting an attempt to distribute malicious content or facilitate phishing through a network of disposable domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6441

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://freewest.at/34725863583.pdf In PDF document text
    • http://gesgo.de/userfiles/file/solibibigisupa.pdfIn PDF document text
    • http://harlit.com/upfiles/file/zafixegakixa.pdfIn PDF document text
    • http://maraulsan.com/ckfinder/userfiles/files/30016316249.pdfIn PDF document text
    • https://zenithoverseas.com/assets/userfiles/files/xotubototefamepoxanukox.pdfIn PDF document text
    • https://campfun.myhost888.com/upload/ckeditor/files/31088545153.pdfIn PDF document text
    • http://ttlh.vn/storage/ckfinder/files/47999790164.pdfIn PDF document text
    • http://www.tahi.hu/ckfinder/userfiles/files/gininivekobaruzuda.pdfIn PDF document text
    • http://mientaytourist.com/uploads/files/34850832423.pdfIn PDF document text
    • http://massarentearchitettura.com/userfiles/files/debisuxubod.pdfIn PDF document text
    • http://faurau.com/luodan/images/userfiles/file/tibuxilemurigaratazafilek.pdfIn PDF document text
    • http://hungthanhauto.com/luutru/files/93338750833.pdfIn PDF document text
    • http://fotostudiovaccari.it/userfiles/files/timegodulosenezakomiz.pdfIn PDF document text
    • http://mrybalko.ru/files/dojepunepigaxujubaxu.pdfIn PDF document text
    • http://ordineveterinarireggioemilia.it/userfiles/files/23020693062.pdfIn PDF document text
    • http://hotelrefah4ter.ir/basefile/hotelrefah4terir/files/18164743208.pdfIn PDF document text
    • https://garnet-medical.com/userfiles/files/60893055604.pdfIn PDF document text
    • http://bradzo-ep.com/uploads/files/83604108870.pdfIn PDF document text
    • http://lifeline-sports.com/files/file/35274061995.pdfIn PDF document text
    • http://avvocatoandreabruschi.it/userfiles/files/66644014283.pdfIn PDF document text
    • https://malabarmail.com/ckfinder/userfiles/files/roginoda.pdfIn PDF document text
    • https://taperagi.com/contents/files/kekelavipesazeliweweru.pdfIn PDF document text
    • http://bikipvuikhoedep.com/app/webroot/files/editor_upload/files/nurinigogizedabodabizuti.pdfIn PDF document text
    • https://tidurmalam.com/contents/files/dagotewuvotadag.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=temple+run+download+for+pc+windows+7PDF link annotation