Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f7782065ccc0078…

MALICIOUS

PDF

75.0 KB Created: 2021-03-19 16:12:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: d9912cc5cc34345563afe195569dc87a SHA-1: bc9678079ea36fe63827c68f38bb12000dead1ad SHA-256: 4f7782065ccc00786ac47b8a0e3b786d276e4e5839d5f5c604d22c819c8b4099
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7191

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://gimoguvi.ru/award?keyword=adobe+illustrator+cs+bangla+tutorial+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4374373/normal_600d6c1f78921.pdfIn PDF document text
    • https://cdn.sqhk.co/dadirowuj/Ogghaij/stormfall_saga_of_survival_mod_apk_unlimited_everything.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378175/normal_5fe5e563e118f.pdfIn PDF document text
    • http://servicesforsupport.com/755085201606t5od.pdfIn PDF document text
    • http://suboxobuwofum.iblogger.org/22715630876.pdfIn PDF document text
    • https://cdn.sqhk.co/bugininaxi/jLjiji1/1388769375.pdfIn PDF document text
    • https://cdn.sqhk.co/pugepavofu/xhdhahf/the_royal_affairs_game_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/kalazirifev/bKjdieB/luxamopexek.pdfIn PDF document text
    • https://cdn.sqhk.co/woleparos/h0ohbja/ruwukiwigikanofaduseg.pdfIn PDF document text
    • https://cdn.sqhk.co/xadakede/gjjibww/electric_trial_pokemon_ultra_sun_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/kasesiseb/cF0qA0S/carrie_underwood_songs_youtube_good_girl.pdfIn PDF document text
    • http://wanulutipumik.iblogger.org/forms_of_id_required_for_employment.pdfIn PDF document text
    • http://topstop.site/what_does_the_boy_in_araby_realizez28xd.pdfIn PDF document text
    • http://hookup157.online/71336022544zc2w0.pdfIn PDF document text
    • http://flowerport.shop/functional_requirements_documenthcpdp.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/xufaxoferugod/anatomy_and_physiology_of_the_kidney.pdfIn PDF document text
    • https://s3.amazonaws.com/bubisifapagefe/14139272848.pdfIn PDF document text
    • http://rigirulame.epizy.com/wunuve.pdfIn PDF document text
    • http://donakabaxes.epizy.com/brookfield_rvf_viscometer_manual.pdfIn PDF document text
    • http://nalafovop.rf.gd/accidente_cerebrovascular_en_perros.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/79470121145.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8DC 5452 bytes
SHA-256: 3c38a640f5394c3f48404206b1c850c7b4c812e968bd58709dd84073c6a5be68
font_01_sfnt_off00010b6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B6B 2752 bytes
SHA-256: 3e660847fe297be444fef3247f3613e3c6febef2995d3f2d6630ee3de59bd4bc

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