Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f058e1c6f09a878…

MALICIOUS

PDF

58.1 KB Created: 2021-09-20 08:11:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: 151eccda3fce4e0dfd9ec4b4ec99b49d SHA-1: 7e6377484ffb617e2d92b9523326afa0b03e820b SHA-256: 5f058e1c6f09a878c247a7a650cb0d76d4090ed182b2e790bed01badebc2e8b4
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, with one heuristic specifically identifying it as a link farm on disposable hosting. While no scripts were extracted, the presence of many external links suggests the document's primary purpose is to redirect users to potentially malicious sites, aligning with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6909

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 http://thanhcongtechtra.com/upload/files/gepure.pdf In PDF document text
    • https://moolans.com/uploads/files/raxidiborewisopata.pdfIn PDF document text
    • https://hotellemaritime.com/hotel/upload/files/siwesisawuroniwi.pdfIn PDF document text
    • http://around-sicily.net/userfiles/file/5865104138.pdfIn PDF document text
    • http://beetsom.com/PROGRAM_FCKeditor_UserFiles/file/198549373061428239d1106.pdfIn PDF document text
    • https://vieclamlaocai.vn/webroot/img/files/xogok.pdfIn PDF document text
    • http://egitara.com/upfiles/files/negekolusol.pdfIn PDF document text
    • https://www.dentaltaxpros.com/wp-content/plugins/super-forms/uploads/php/files/708c6ae8d6496817cd3ffc832b167e30/dovonamitirazu.pdfIn PDF document text
    • http://patanamachine.com/imgUpload/files/51554795993.pdfIn PDF document text
    • https://yennenga.org/business_school/uploads/file/goverodudesemewij.pdfIn PDF document text
    • https://smsenerji.com/resimler/files/34852595141.pdfIn PDF document text
    • https://turdv.ru/SITE/files/editor/file/xamor.pdfIn PDF document text
    • https://zenmobile.in/jaipriyart/uploads/files/matepinetefuwovomebivif.pdfIn PDF document text
    • https://cortopolis.ar/userfiles/file/dizevufusuvosafutepok.pdfIn PDF document text
    • http://riskhedgetech.com/uploaded/file/457040290613f67228423c.pdfIn PDF document text
    • http://kuppersbusch.hu/userfiles/files/70601949538.pdfIn PDF document text
    • http://angelojrobles.com/admin_initial_test/userfiles/file/67195104722.pdfIn PDF document text
    • https://kidneystonetreatment.in/userfiles/files/49482207468.pdfIn PDF document text
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/5pkrgoj30snrh6cncum2fejfc7/79206407514.pdfIn PDF document text
    • https://billard-hauri.ch/userfiles/file/jagojowutajodijig.pdfIn PDF document text
    • http://tivatijapan.com/uploads/userfiles/file/36526510839.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=igbo+missal+appPDF link annotation