Malicious PDF — malware analysis report

Static analysis result for SHA-256 48c0bc6097948ad8…

MALICIOUS

PDF

59.7 KB Created: 2021-03-06 11:40:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 675369662d8d4ae86511f2fac927e226 SHA-1: a9b5a0af7cce40f7cc27e6af017483a6d8bfc53d SHA-256: 48c0bc6097948ad8ff658fff2d7259ccf14fe6660a05791dc425105863704ef9
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs, many pointing to disposable hosting, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were extracted, the presence of external URIs and the link farm heuristic point towards an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9754

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://leonvi.ru/strik?utm_term=resumen+corto+del+libro+un+grito+desesperado PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4465257/normal_5fdd9859de152.pdfIn PDF document text
    • http://tesugujinarijag.mywebcommunity.org/wefenirirozujupujovepolur.pdfIn PDF document text
    • http://fozixozag.iblogger.org/online_project_management_course_university.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423430/normal_5fdd69a22462e.pdfIn PDF document text
    • http://padulima.22web.org/63416148981.pdfIn PDF document text
    • http://xakidofe.sportsontheweb.net/dwarf_blood_bowl_set_up.pdfIn PDF document text
    • http://sunuzajiwexo.22web.org/roku_black_friday_2020_canada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/742d3e24-8e87-4c64-9dc2-4f2a76b07fb6/90709777352.pdfIn PDF document text
    • http://nununad.myartsonline.com/garejexesikenumodexawa.pdfIn PDF document text
    • http://wasamatebupo.rf.gd/tft_9._18_item_cheat_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/browser_file_instead_of_opening_it.pdfIn PDF document text
    • http://dogiperij.epizy.com/96232524552.pdfIn PDF document text
    • http://molomafifivis.epizy.com/matelofa.pdfIn PDF document text
    • http://jonokib.rf.gd/how_to_record_interim_dividend_paid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90772c38-4c69-46f3-b541-f631dbb24fa6/bimovonazimumiva.pdfIn PDF document text
    • http://mivimuzuge.rf.gd/what_was_the_outcome_of_the_agricultural_revolution.pdfIn PDF document text
    • http://gelutusuxipedib.rf.gd/python_setup.py_build_egg.pdfIn PDF document text
    • http://jinoratizoja.epizy.com/tiny_archers_unlimited_gems_and_money_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/57040447395.pdfIn PDF document text
    • https://s3.amazonaws.com/sedowedi/monthly_fire_extinguisher_inspection_spreadsheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jezaxojipevu/free_online_bumper_sticker_template.pdfIn PDF document text

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