Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8c65281bcb15c0a…

MALICIOUS

PDF

73.4 KB Created: 2021-01-31 15:08:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9fcf82a6757908a64443cf4beb31dc38 SHA-1: 45b94206af79a854b2a30a7e5188a3eec279aba1 SHA-256: e8c65281bcb15c0ab0bfc1fc726e9dd66808db347d9c4afa5ac29c3c686b455b
136 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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://maypoin.ru/aws?utm_term=amazon+sns+push+notification+android PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4385422/normal_600fad4394840.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377902/normal_5ffda1cbbbb80.pdfIn PDF document text
    • https://cdn.sqhk.co/rapedipular/eOhe8gd/24478768014.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406820/normal_5fca5d6eac2f5.pdfIn PDF document text
    • https://cdn.sqhk.co/tipusuzog/icibXgc/cat_jump_starter_cj3000.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377647/normal_60055fc483505.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495254/normal_5fd6b089719d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446651/normal_6012dd944fe87.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mujozitovisiwud.rf.gd/paradise_city_game_free_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/serogajugomiji/tipos_de_actos_administrativos.pdfIn PDF document text
    • https://s3.amazonaws.com/xijilesuzuxo/uc_browser_app_java_9._5.pdfIn PDF document text
    • https://s3.amazonaws.com/regegozumekoza/airtel_tv_live_app_apk.pdfIn PDF document text
    • http://varoniwarovez.rf.gd/best_air_purifier_for_smoke_consumer_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/sojebelevenex/mapudipazumifopusofodu.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/mafowaxaxe.pdfIn PDF document text
    • https://s3.amazonaws.com/vapelurowar/fumufonepalas.pdfIn PDF document text
    • https://s3.amazonaws.com/pujinit/high_brunhilda_guide_celliera.pdfIn PDF document text
    • https://s3.amazonaws.com/xoferuzu/rabaluropowifanikoliporo.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_off0000e23c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE23C 5404 bytes
SHA-256: 4b38b5efc5af3c18c23c0dccc47011226acde748e98d83df1e86c3151575ca95
font_01_sfnt_off0000f47d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF47D 10588 bytes
SHA-256: ee40cbe6b46308c44c55c58bcbb444147bfff735e55f15ff1f0c73d88d04a7b0