Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b430d753faf4187…

MALICIOUS

PDF

50.6 KB Created: 2021-02-14 16:17:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 677d6f8231b568c9768df6b87bcc6cb5 SHA-1: a2d092b999e03f981a7c270d6796fa92854257e0 SHA-256: 0b430d753faf41872de18580812e1eb889a02380bfa993d1101025a29adfa6a6
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier indicate malicious intent, likely related to phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and numerous external URLs point towards a malicious document, potentially using embedded JavaScript for exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7360

Heuristics 5

  • 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 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://jacksth.ru/aws?utm_term=nra+bullseye+target+pdf PDF link annotation
    • http://ketorebagibof.22web.org/project_management_risk_breakdown_structure_template.pdfIn PDF document text
    • https://cdn.sqhk.co/xolizoxime/ZpNQjer/podam.pdfIn PDF document text
    • https://cdn.sqhk.co/mokavokaven/9Ryhcif/dalewiwawubavunotazutu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446395/normal_6009f0c968add.pdfIn PDF document text
    • https://cdn.sqhk.co/vipujitebiki/dhHshib/siren_head_reborn_mod_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456376/normal_5ff6a9b443fdd.pdfIn PDF document text
    • http://sefexetewizu.iblogger.org/billian_billian_lyrics.pdfIn PDF document text
    • https://cdn.sqhk.co/tamurikubol/je3icif/39517303912.pdfIn PDF document text
    • http://rogumim.iblogger.org/chrome_alternative_browser_android.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387573/normal_601c86de4d9bf.pdfIn PDF document text
    • https://sewigemebovoneb.weebly.com/uploads/1/3/3/9/133997870/rixus-dikekonaden-kufiwejexoja.pdfIn PDF document text
    • http://rikeropovi.22web.org/rutojurosofaverirav.pdfIn PDF document text
    • https://gogabaxada.weebly.com/uploads/1/3/4/8/134852864/ravowifotidafupago.pdfIn PDF document text
    • https://s3.amazonaws.com/mekonulegipero/hammerson_plc_annual_report_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/dusubonifu/avanza_veloz_2012_manual_jogja.pdfIn PDF document text
    • http://xebizeluzifavi.rf.gd/my_airtel_apk_old_version_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gajakelegeza/android_facebook_login_app_not_setup.pdfIn PDF document text

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