Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebeac975b0281a1b…

MALICIOUS

PDF

71.6 KB Created: 2021-02-18 04:37:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 439f1f15d8dace0f9f49235066dc1ef7 SHA-1: c08f2c2a6f40bf61567279fa6ef2abef44552d98 SHA-256: ebeac975b0281a1ba0414113c33805b57718e455edfd2c1bc0197dcbfbd70a52
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/wix?keyword=bill+of+rights+worksheet+pdf+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4499995/normal_5fd921cb26736.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426699/normal_5ffd263ac025c.pdfIn PDF document text
    • https://cdn.sqhk.co/dawafawux/AXifhgH/fajizesajudemuvesu.pdfIn PDF document text
    • https://cdn.sqhk.co/nulusezitelo/Ihalpii/arcade1up_pinball_dimensions.pdfIn PDF document text
    • https://cdn.sqhk.co/xexisini/pIjijhp/4377384907.pdfIn PDF document text
    • https://cdn.sqhk.co/pulununese/5jhggAy/vukiv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373504/normal_60112d22096cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492580/normal_5fe80d1b2e055.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447497/normal_5ffad277020d3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/string_to_hex_java_android.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/broil_king_baron_520_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jivamubug/today_weather_report_jaipur_city.pdfIn PDF document text
    • https://s3.amazonaws.com/tawosutosuxi/chatal_band_song_dj.pdfIn PDF document text
    • https://s3.amazonaws.com/bexolamabad/bepetesokumezuw.pdfIn PDF document text
    • https://s3.amazonaws.com/tazibabebamep/tv_news_reporter_salary_los_angeles.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_off0000dc7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC7E 5508 bytes
SHA-256: 66650eab508064d2ebf5d2c88c4d7e235db68b002ef835fe4e26263daf73501e
font_01_sfnt_off0000ef50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF50 9856 bytes
SHA-256: 3ba9c41dcaa65ffaec217648f7d63e96bf2d5522d2ab8a77b5adaa16882cc03f