Malicious PDF — malware analysis report

Static analysis result for SHA-256 7df93b78e425f8b1…

MALICIOUS

PDF

64.9 KB Created: 2021-03-03 20:40:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 610691b3768eda5e9f6726c51b71a2a5 SHA-1: f73e1f234e3fabd342b9ef29049919a378561e9c SHA-256: 7df93b78e425f8b102e3d1e90ec375eb3e3e3219d8efdd940290f150f6e22783
146 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://dugedepap.ru/award?keyword=unitypoint+express+care+west+des+moines PDF link annotation
    • http://dakisemakegag.sportsontheweb.net/sifaz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475864/normal_6036ae1722688.pdfIn PDF document text
    • https://cdn.sqhk.co/parapirer/iiQjfks/jam_filled_shortbread_cookies_calories.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450731/normal_602a17241200e.pdfIn PDF document text
    • http://fosipuzo.mypressonline.com/how_to_replace_pump_belt_on_bissell_proheat_2x.pdfIn PDF document text
    • http://virona.org/bariwimilezowemimowedoecr4p.pdfIn PDF document text
    • https://cdn.sqhk.co/gokovolasula/ihHifbS/cancel_my_verizon_appointment.pdfIn PDF document text
    • https://cdn.sqhk.co/xavonepez/hgigjg6/gavirepav.pdfIn PDF document text
    • http://callup.today/159700230931492k.pdfIn PDF document text
    • http://defi-bet.world/california_residential_lease_agreement_templatelej95.pdfIn PDF document text
    • https://cdn.sqhk.co/vasunavewes/ghdBRja/85427438793.pdfIn PDF document text
    • http://vumonivaxozutod.mypressonline.com/sepesejarijijoganiju.pdfIn PDF document text
    • http://disconto50.pro/70740683135ea8b5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nejimafalun.onlinewebshop.net/statistics_tutorial_for_beginners_netbeans.pdfIn PDF document text
    • http://satawakerexe.atwebpages.com/1000_places_to_visit_before_you_die_list.pdfIn 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_off0000c1d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1D0 5440 bytes
SHA-256: eb11688eaae85036ad06a799413a9e3a0ffaea8d92ddd1f540b8a691cc010cf4
font_01_sfnt_off0000d45d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD45D 9868 bytes
SHA-256: 9159350a01e6eddc94e73e36d94ba2f60371fb5ff84665de2fd1d57d29459e46