Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7933d768691883a…

MALICIOUS

PDF

71.2 KB Created: 2021-02-20 03:08:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: cab503b941e7943e098bf664ec21f430 SHA-1: 33d7b8dd63b2ccbec739938e43131f6619fc93eb SHA-256: b7933d768691883ac4de3622df179351487192b3797f889276b7e407d1b940d8
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/wix?keyword=crest+high+school+shelby+nc+football+schedule In PDF document text
    • https://cdn-cms.f-static.net/uploads/4416927/normal_602baf07794f5.pdfIn PDF document text
    • http://tekcabinets.xyz/fb_lite_for_tizen2ekay.pdfIn PDF document text
    • https://cdn.sqhk.co/tusadopovet/Zicifhh/lazonerodojejolozuf.pdfIn PDF document text
    • http://ndfnasg.xyz/ring_size_guide_ukdgci6.pdfIn PDF document text
    • https://cdn.sqhk.co/sidamebo/uhfgh8p/nobawunuvixawibemavo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448740/normal_601a864632777.pdfIn PDF document text
    • https://cdn.sqhk.co/zawileveruz/hbgd8hj/sidiwojugojofovutugonugud.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454047/normal_602ea9c59a9fd.pdfIn PDF document text
    • http://idealslimitalia-official.site/die_bergdoktor_episodenguidewlgbd.pdfIn PDF document text
    • http://storezone.info/wim_hof_method_app_storerjbdx.pdfIn PDF document text
    • http://rollernefritmassage.xyz/cashew_chicken_sheet_pan_mealjp50k.pdfIn PDF document text
    • https://cdn.sqhk.co/kobadaxo/Fxtjfhi/rob_homestead_rdr2_sean.pdfIn PDF document text
    • http://bloodcraft.online/neural_network_projects_with_python_downloaddesuk.pdfIn PDF document text
    • http://befigter.xyz/csgo_jump_throw_bind_20180tmc5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/ligole/home_address_format_australia.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/43891081114.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE4B 5432 bytes
SHA-256: e37aa940c2516516467fd46d21c1e2db42c864b65987d0427ee7faac90c3bbc6
font_01_sfnt_off0000e0bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0BC 9596 bytes
SHA-256: 5de9b9e6f6fa91fa4f34ed9cd9678c4b56aed47997cf0d4bdcee677967b1eb62
font_02_sfnt_off00010195.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10195 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3