Malicious PDF — malware analysis report

Static analysis result for SHA-256 67be06cc63267e1b…

MALICIOUS

PDF

71.3 KB Created: 2021-03-04 00:03:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e4dc36091ed39a5e1be215eac4d5a220 SHA-1: cc0f58e04d9f27e9419fddb77293b9d30f83d6c1 SHA-256: 67be06cc63267e1bf23a77cb69867362fa6cc2b0444841acf881d9acce35b8dd
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://dugedepap.ru/award?keyword=go+math+2nd+grade+printable+worksheets PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4421477/normal_5fc6a9f0a9b0d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375197/normal_601e6d24f3fe0.pdfIn PDF document text
    • http://rebezun.mygamesonline.org/theories_of_organizational_communication_ppt.pdfIn PDF document text
    • http://lijovafe.22web.org/fifty_shades_of_grey_2018_sub_indo_full_movie.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485579/normal_6020082a3df1d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408319/normal_5ff288fe21337.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367919/normal_603efed724b55.pdfIn PDF document text
    • http://besemafobekilir.22web.org/adobe_photoshop_7._0_filter_portraiture.pdfIn PDF document text
    • http://jepisafidezegun.scienceontheweb.net/xudurotivon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409254/normal_602fb431b4f1a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503787/normal_6027c082f125d.pdfIn PDF document text
    • http://gewarum.66ghz.com/vataxipuvevop.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://karatufi.epizy.com/clash_of_clans_bot_for_android.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_off0000d9ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9BA 5832 bytes
SHA-256: 70f643948859e8bf6f4242c76058da5d58c232c2cb5df81e8cc10f4e47ec3004
font_01_sfnt_off0000ed75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED75 10080 bytes
SHA-256: a0bd869e0e3a6eaed0a8b8bc460079a9a75b4e461f5f2bf7e63a36771011fcde