Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fae9bfb867235b9…

MALICIOUS

PDF

56.5 KB Created: 2021-01-26 11:26:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: f7c528211d361ce6b63e703af9818cc6 SHA-1: 4c0c97cd22f2a9b6a2d9a131f506473b00968343 SHA-256: 5fae9bfb867235b9aee94f7d3d5f0cf5fdc36ff58133ddbe038b9612b143238f
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many pointing to disposable domains, suggesting a link farm designed to drive traffic to potentially malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and heuristic firings point towards a malicious document, possibly leveraging embedded JavaScript for obfuscation or redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9457

Heuristics 5

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://seumenha.ru/wb?keyword=equalizer%20fx%20apk%20download%20uptodown PDF link annotation
    • https://xevibobi.weebly.com/uploads/1/3/4/6/134683071/tetewo.pdfIn PDF document text
    • http://wellwork.site/crew_application_hourly_onlywd5c1.pdfIn PDF document text
    • https://simokatojerosu.weebly.com/uploads/1/3/0/8/130874490/3352064.pdfIn PDF document text
    • https://cdn.sqhk.co/wufevinek/ha6nggh/juxugegijatulajazupem.pdfIn PDF document text
    • https://cdn.sqhk.co/fawabanof/kiageiS/tibopuxowonapajugemi.pdfIn PDF document text
    • https://cdn.sqhk.co/zeliravepuj/iRiQGxf/23333512379.pdfIn PDF document text
    • https://cdn.sqhk.co/juwafuzivega/dgg5mZU/english_song_download_mp3_bestwap.pdfIn PDF document text
    • https://cdn.sqhk.co/pedajobu/g1Vsjfh/88087678164.pdfIn PDF document text
    • https://povaginomoti.weebly.com/uploads/1/3/2/7/132740536/lowagurisusaribame.pdfIn PDF document text
    • https://labopepiw.weebly.com/uploads/1/3/4/7/134747507/b24a5508.pdfIn PDF document text
    • https://cdn.sqhk.co/gemadaruvow/ajgii2g/12200035947.pdfIn PDF document text
    • https://cdn.sqhk.co/vutenugade/oifhhvY/4338548645.pdfIn PDF document text
    • https://cdn.sqhk.co/girasufu/bQhatjg/bein_sports_subscription_fee.pdfIn PDF document text
    • https://xomitemekebok.weebly.com/uploads/1/3/4/8/134881854/negejib-degafiziwufozo.pdfIn PDF document text
    • http://4kuhd.me/graphic_design_software_free_trialupj78.pdfIn PDF document text
    • http://ch-bewertung-2888.xyz/xoboxofikafizafnfn8u.pdfIn PDF document text
    • https://fikuvigobe.weebly.com/uploads/1/3/4/5/134582673/7120248.pdfIn PDF document text
    • https://cdn.sqhk.co/munoforifuso/hFBXNjb/roary_the_racing_car_games_free_online.pdfIn PDF document text
    • https://nawexolaka.weebly.com/uploads/1/3/4/7/134704757/9377498.pdfIn PDF document text
    • https://s3.amazonaws.com/kifutizijebuj/strategic_thinking_and_business_planning.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/ratanopovefonud.pdfIn PDF document text
    • https://s3.amazonaws.com/ponivotigegepub/wawufofagejuxotu.pdfIn PDF document text

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