Malicious PDF — malware analysis report

Static analysis result for SHA-256 1945606a802cdcb8…

MALICIOUS

PDF

72.9 KB Created: 2021-02-21 20:53:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9b66d287c7b84410ef1c409eb137f5a9 SHA-1: 073202d5b6b46b87c82b3188e0241834b63b6c78 SHA-256: 1945606a802cdcb85adb5ff1ed8158e4c023b4f7a90229a554d6754647ed5cb2
204 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/123?utm_term=nc+driver%2527s+license+legal+presence+no+lawful+status In PDF document text
    • https://static.s123-cdn-static.com/uploads/4470679/normal_5ff0a4ba6a73e.pdfIn PDF document text
    • http://zabodolodak.iblogger.org/sage_accounting_training_manual.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471686/normal_5ff8d5ad2930d.pdfIn PDF document text
    • https://cdn.sqhk.co/kobewudojuvo/eLgeoFb/neogeo_mini_pad_review.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424981/normal_60274a7ae164c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470979/normal_601fdfc333552.pdfIn PDF document text
    • http://bavolotaw.22web.org/zubovizopogelapizoxemab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452587/normal_5fd7f8b95289f.pdfIn PDF document text
    • https://cdn.sqhk.co/vumivatuvi/geCjiOL/microtrip_game_hack_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/dopiporajen/ghf9zhj/99315060011.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422884/normal_6031b08460de1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://banitazivi.epizy.com/30520569996.pdfIn PDF document text
    • http://xulodolab.epizy.com/ek_waqia_batlata_hoon_naat.pdfIn PDF document text
    • http://wepexivir.epizy.com/86337574460.pdfIn PDF document text
    • http://labimovoguduwej.epizy.com/how_much_for_a_used_total_gym.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_off0000dfb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFB4 5480 bytes
SHA-256: 899fde8643732a00d349a5b8a7f87b6996d5bc3a06ef602c70e6f78efa644e25
font_01_sfnt_off0000f28c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF28C 10520 bytes
SHA-256: 5492a014225939c3a4018cfb17fb9a4c4e1d9efde367adb15acc3e432ba97509