Malicious PDF — malware analysis report

Static analysis result for SHA-256 964053fd143d0fcf…

MALICIOUS

PDF

72.7 KB Created: 2021-01-25 11:52:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 02203e4108967a6e20e271e55e248da2 SHA-1: 303862205aac55570dea1474949ae9df8d4a122f SHA-256: 964053fd143d0fcf34a7cceea3af04d56724f4033fcbb0b28306dd950113e084
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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/wb?keyword=happy%20wheels%20full%20game%20free%20no%20download In PDF document text
    • http://1xbets-regs.site/commuter_cars_tangozgz41.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410004/normal_600c723a8f71a.pdfIn PDF document text
    • http://sellforce.ru/uber_driver_salary4wwdg.pdfIn PDF document text
    • http://english-10.site/perfect_piano_mod_apk_7._5._319ox2.pdfIn PDF document text
    • http://bossyonlinex.com/giving_one_calendar_month_notice9kaik.pdfIn PDF document text
    • http://vquest.website/ruzetoxvfnis.pdfIn PDF document text
    • http://datab.vip/boxeruxf35m8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462986/normal_5fe6db3badb8d.pdfIn PDF document text
    • http://basiditdcf.space/xetofudiwok3sxey.pdfIn PDF document text
    • http://bu-markett.com/vr_x_wing_racer_3d_download4zuut.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491969/normal_6000ef8551481.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://panadokopejed.epizy.com/43118354787.pdfIn PDF document text
    • http://likijanima.epizy.com/bd_new_natok_3gp.pdfIn PDF document text
    • http://desuvusemexemob.epizy.com/wopefa.pdfIn PDF document text
    • http://tinozireru.epizy.com/are_dryer_sheets_bad_for_your_dryer.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_off0000de0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE0D 5612 bytes
SHA-256: 805ad46f5d79fdc2a029232d4fb528f4dff2a3b3dc379632a31ad347f01d2703
font_01_sfnt_off0000f110.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF110 10808 bytes
SHA-256: f2a454cba9771355c88343a018bacb5e90fa6cbda9ee10a141e8d47a1e355afb