Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba66025bf3cac496…

MALICIOUS

PDF

73.2 KB Created: 2021-02-20 22:56:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2d18213420d32ef8d22f8169b570dbc5 SHA-1: dd4a15eb1e4ae3ba9b4bd1743d0ab1ef8a8dea03 SHA-256: ba66025bf3cac49638b5614f512d0e7d3118c4de05cc53c6a161015328ff7d85
146 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://jottigo.ru/aws?utm_term=baby+trend+jogger+stroller+cover PDF link annotation
    • http://teenagetutor.online/61522741125a002x.pdfIn PDF document text
    • http://nat-yoga.space/ap_police_e_challan_appvi95b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379482/normal_601a1e3ae50c8.pdfIn PDF document text
    • http://goodsfor.life/marathi_message_app_freeedrcc.pdfIn PDF document text
    • http://mklhhhh.space/what_was_the_impact_of_us_involvement_in_latin_america_in_the_early_1900sv7q5t.pdfIn PDF document text
    • http://blubadgehelp.net/textos_em_ingles_para_6_anobkbys.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409255/normal_5fd938615d7c1.pdfIn PDF document text
    • https://cdn.sqhk.co/ledirevobep/d7yEQkE/vidibudivita.pdfIn PDF document text
    • http://klyshsheff.xyz/division_2_aid_hostage_rescueasgjx.pdfIn PDF document text
    • https://cdn.sqhk.co/virurewev/lhcaggj/german_chocolate_cake_cooking_classy.pdfIn PDF document text
    • http://rbqjkwklnd.xyz/43871307805g90te.pdfIn PDF document text
    • http://hookup153.online/avengers_endgame_subtitles_english_full_moviehtxxn.pdfIn PDF document text
    • https://cdn.sqhk.co/foturozav/gdcEhhf/zombie_shooter_survive_the_undead_outbreak_pc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421474/normal_600b587c91c48.pdfIn PDF document text
    • https://cdn.sqhk.co/nedabuke/gjoDggh/london_bridge_4k_wallpaper_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In 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_off0000df9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF9B 5532 bytes
SHA-256: 0c87f0973d02a1338eb142dc1943e564905fcca7a0d6bc556953329476b2091c
font_01_sfnt_off0000f28b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF28B 11012 bytes
SHA-256: a298b6ab3ffb95f1eacc1123c5ecf6ad357561bac5c523c492500fe8cbd2ec1c