Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2ef5a55b98a4acf…

MALICIOUS

PDF

76.2 KB Created: 2021-02-24 22:35:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 740c5c4cf98c3cd0b8f98f0a3a967062 SHA-1: b4f3d98dc395cdf9205e26d3f429d5ab8afe4f4d SHA-256: c2ef5a55b98a4acf6a8b8cc9a7d333872a174cf5598316ff3a1432eb20bc0196
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://jacksth.ru/aws?utm_term=importancia+de+monitorizar+los+signos+vitales PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4379241/normal_5ff4c730efe73.pdfIn PDF document text
    • http://jiwapadenejeza.getenjoyment.net/64821920626.pdfIn PDF document text
    • http://vodabutopidaru.getenjoyment.net/cen-tech_battery_charger_manual.pdfIn PDF document text
    • http://rawoxaxevog.mygamesonline.org/wudifiwugulize.pdfIn PDF document text
    • https://rimuzomidaz.weebly.com/uploads/1/3/4/3/134353295/rekokefefe.pdfIn PDF document text
    • https://tewedarutomos.weebly.com/uploads/1/3/2/3/132302993/1393598.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393186/normal_5fe457ad9ddde.pdfIn PDF document text
    • http://timinome.getenjoyment.net/roxewozekagivilad.pdfIn PDF document text
    • http://viniveba.mywebcommunity.org/kodolete.pdfIn PDF document text
    • http://famozosivupiwij.sportsontheweb.net/95826117170.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nejesezape.myartsonline.com/rekanudi.pdfIn PDF document text
    • http://rosajeku.myartsonline.com/dark_souls_3_save_file_download_ps4.pdfIn PDF document text
    • http://supuwevul.atwebpages.com/xizasipikonivoronanidak.pdfIn PDF document text
    • http://pozidijapepore.atwebpages.com/how_to_train_your_dragon_series_books_in_order.pdfIn PDF document text
    • https://s3.amazonaws.com/bofake/multiplying_and_dividing_mixed_fractions_worksheets.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_off0000e8a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8A1 5440 bytes
SHA-256: b46614acd71450e6f50bf1b42e2fea2fee169c9d48f02cb0beb57ae0dc454144
font_01_sfnt_off0000fb15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB15 12104 bytes
SHA-256: 19821a66ee184291e6bd505f9f5f1484e9c0ff7d204757a16b96cd9b8bfa034c