Malicious PDF — malware analysis report

Static analysis result for SHA-256 a881218d5f208a1f…

MALICIOUS

PDF

72.7 KB Created: 2021-02-26 16:09:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7d5b5d70829e24feb116313c4c5dfef7 SHA-1: 7ecd905b970d78abd1b33bdbf21271bfd32b4518 SHA-256: a881218d5f208a1f8e0f2c01d99e2b1557d569eaff594946183e1ed0dd1fa0c6
126 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
  • 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://fokemale.ru/wix?keyword=adding+and+subtracting+real+numbers+worksheet+pdf PDF link annotation
    • http://kozidozilujivox.getenjoyment.net/what_are_jobs_daughters_names.pdfIn PDF document text
    • http://lollipopa.online/mesogakuronezujiqn3x9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427506/normal_5fcfebdc8b82e.pdfIn PDF document text
    • https://mulaxenowaw.weebly.com/uploads/1/3/4/8/134862071/tafusu-sudotuku.pdfIn PDF document text
    • http://politach.com/28986434230zn81i.pdfIn PDF document text
    • http://googsnat.space/footsies_meaning_fighting_gamesc8vem.pdfIn PDF document text
    • http://wtia.space/formato_modelo_de_factura_en_excelrzmbf.pdfIn PDF document text
    • http://kernig.store/6623441862961vwz.pdfIn PDF document text
    • http://cparta.moscow/39512824886yhlw2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474978/normal_60136d2bd29e8.pdfIn PDF document text
    • http://conicppjry.bid/91467669154ou5ga.pdfIn PDF document text
    • https://dopakegufa.weebly.com/uploads/1/3/1/3/131384718/863572ac4fc7.pdfIn PDF document text
    • http://republvinb.fun/m_audio_keystation_49_specsew12z.pdfIn PDF document text
    • https://bezebaterizijir.weebly.com/uploads/1/3/1/3/131384714/xiwepizelilolib.pdfIn PDF document text
    • http://firavowinoza.iblogger.org/gomanimifopi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387562/normal_5ff18eca6eda5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371787/normal_600124c8b1be0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gozenabuzixi.onlinewebshop.net/wojukimevevowosu.pdfIn PDF document text
    • http://kifugelewepin.epizy.com/jizukanipifumamuputefu.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_off0000dc27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC27 5856 bytes
SHA-256: 3bd000b910a08e72a11584ad3d7e7630c23c5da5e04f9f967b2f3a85cc5c7205
font_01_sfnt_off0000effc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFFC 10848 bytes
SHA-256: 1217e9bed77c9804bec6940ebe1a6f23c4c5600d0336c101b1c58b45defd53dc