Malicious PDF — malware analysis report

Static analysis result for SHA-256 b76eb9a64eaba08c…

MALICIOUS

PDF

72.7 KB Created: 2021-03-03 18:25:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 49d580d454b94477aaefaa1c93ecd6b3 SHA-1: 8a3bd9f646f633806ae1560371d8dbc261e18e4e SHA-256: b76eb9a64eaba08c2a064ce32dafbdc4721cf60b1faeb3528acb9c5ecf032362
126 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
  • 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.
  • 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://jacksth.ru/award?keyword=egyptian+cinderella+book+pdf PDF link annotation
    • https://cdn.sqhk.co/zarejesorufo/i0jewhi/dark_forest_warriors.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448121/normal_602e529beb2f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423431/normal_5fe86be167b6a.pdfIn PDF document text
    • http://zuzorovix.scienceontheweb.net/74722282251.pdfIn PDF document text
    • https://cdn.sqhk.co/karapenakozi/eYhehi3/crash_car_driving_2019_usa.pdfIn PDF document text
    • http://zitirisiz.mywebcommunity.org/10797655935.pdfIn PDF document text
    • https://cdn.sqhk.co/badalozebale/Aghhjhh/panda_pop_bubble_shooter_download.pdfIn PDF document text
    • http://xefawojuj.mygamesonline.org/pokujosuzepatetukekoziben.pdfIn PDF document text
    • http://xejopegig.mypressonline.com/4611134724.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470391/normal_60155a0313f94.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvebopeweb/dKgfnax/9655661894.pdfIn PDF document text
    • https://cdn.sqhk.co/zotofoza/ziajfPe/virus_on_my_iphone_xr.pdfIn PDF document text
    • https://cdn.sqhk.co/pidagasew/dDgdhac/plants_vs_zombies_heroes_free_download_for_pc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tiluxusimutine.atwebpages.com/dell_r710_server_rack_size.pdfIn PDF document text
    • http://xabudavadeguvo.myartsonline.com/sikisikoga.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_off0000de83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE83 5408 bytes
SHA-256: edf9cf42f86c1e440dae9f7f6b601c5e510030f33f8d02ba5266ed2333f9cb94
font_01_sfnt_off0000f108.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF108 10872 bytes
SHA-256: 18381088a3ce994a8b3d882059dba1760cb25b1d19fcff7683c0b259ac4be273