Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2eb6d8dd4e39642…

MALICIOUS

PDF

66.3 KB Created: 2021-04-14 11:34:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: e57ea32cde268ba6abd9b718f7d1635b SHA-1: efa161da0591d86b9c8db73104b72099c9faffdd SHA-256: a2eb6d8dd4e39642988fcfc4647db7fe9dde575543d174bac27548e6ea3900b1
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 0.7995

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://soxebez.ru/strik?utm_term=ohsen+watches+smartwatch PDF link annotation
    • http://dajexori.mypressonline.com/angel_caregivers_private_limited.pdfIn PDF document text
    • http://raxejudesezix.scienceontheweb.net/sigmund_freud_psychoanalytic_theory_slideshare.pdfIn PDF document text
    • http://vogudikomi.getenjoyment.net/39927214070.pdfIn PDF document text
    • http://gk-kuban.ru/stock_market_live_software_free_download_for_pc0dmcb.pdfIn PDF document text
    • http://gvidilon.ru/dowujorifotesfhtii.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485591/normal_604e62c1dd3dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381528/normal_603337097bbf6.pdfIn PDF document text
    • http://it50life.pro/dukodizupuzurazafosikaxoojrjc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419818/normal_60063e540f5a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447915/normal_6012a87e06477.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387567/normal_600918ef50975.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447108/normal_5ff783d8e3570.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472783/normal_604f2e49e6c0e.pdfIn PDF document text
    • http://qlemelest.online/47351735024oh1kd.pdfIn PDF document text
    • https://cdn.sqhk.co/ninasodivofi/gDgUgid/amaze_file_manager_apk_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/dedesonor/Cz4lKgi/radio_shack_soldering_gun_tips.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418365/normal_600f3907bb4a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448727/normal_6061d0e514118.pdfIn PDF document text
    • https://cdn.sqhk.co/rubogomuweme/57mhihj/foosball_winner_game_by_nuwave.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479715/normal_6017c23fe3a3a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381759/normal_604b979350447.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zorikeroz.onlinewebshop.net/vsepr_theory_class_11.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e70f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE70F 5124 bytes
SHA-256: 0161da0c9375154b9332f97186131c006bade4a4cb02c22e47dfda59e44c0632

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