Malicious PDF — malware analysis report

Static analysis result for SHA-256 c31a6a5bfd6d91f0…

MALICIOUS

PDF

71.0 KB Created: 2021-02-26 18:53:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: e9c968680800eec2a46ae8d8f54dcdd8 SHA-1: 33262ea57a131bcb95ca355d259843c27a49be15 SHA-256: c31a6a5bfd6d91f0171ddbc1aa330180e4d7a36345571a02659046240e00efff
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/award?keyword=verizon+ont+i-211m-k+reset PDF link annotation
    • http://vitofemegawe.getenjoyment.net/zopemofazibitalixet.pdfIn PDF document text
    • http://ag-management.space/hitachi_c10fch2_change_bladef3n3c.pdfIn PDF document text
    • http://libralab.digital/liverpool_vs_barcelona_4-_0_full_gamee277q.pdfIn PDF document text
    • https://cdn.sqhk.co/musutalivun/gNeYWgf/654610595.pdfIn PDF document text
    • https://depemazijibibo.weebly.com/uploads/1/3/4/8/134846300/levoxe-polikenolozo-pufeb-jesub.pdfIn PDF document text
    • http://pogawubujogeje.mypressonline.com/martin_heidegger_summary.pdfIn PDF document text
    • https://jeporifitev.weebly.com/uploads/1/3/4/2/134265357/6085e1f4273.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384825/normal_60146ff58c6b1.pdfIn PDF document text
    • http://rusherx.studio/how_to_program_general_electric_33709_4-device_universal_remote_controlgqdij.pdfIn PDF document text
    • https://cdn.sqhk.co/jotepomi/hddgjyO/farming_simulator_14_mods_iphone.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502721/normal_6036bcb2b3c66.pdfIn PDF document text
    • https://dixapixukezawe.weebly.com/uploads/1/3/5/3/135388261/3bc44edf22.pdfIn PDF document text
    • http://svoylend.xyz/ficha_tecnica_raven2lm6k.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://koxolavomuzo.myartsonline.com/powoba.pdfIn PDF document text
    • http://wegugoleta.onlinewebshop.net/nomigobejeporobojomatole.pdfIn PDF document text
    • http://wugujub.onlinewebshop.net/jubegavuwupalifonimujob.pdfIn PDF document text
    • http://gurabagoderes.atwebpages.com/does_tegrity_record_your_screen.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_off0000dae5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAE5 4884 bytes
SHA-256: 7beb7d62ea390ca1a2feea79a7de50ca01702aa07cb70539751a3649729a20c2
font_01_sfnt_off0000eb8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB8A 10716 bytes
SHA-256: 807e0ca3f6c0d80d98eb963ab05e6d8fbaf954b40c499bc84f0855bbc8d0b443