Malicious PDF — malware analysis report

Static analysis result for SHA-256 11a6a08c6f278659…

MALICIOUS

PDF

73.6 KB Created: 2021-02-22 17:00:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5fe4dfef70c7505786460dfd55c69860 SHA-1: 8e2ca1125aa73d2698f69ca2976f26da115c5c35 SHA-256: 11a6a08c6f278659c2585dec13ac2141d06f86fd19bea6abd6d7cccb92402eca
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wb?keyword=dunkirk%20boiler%20age In PDF document text
    • https://static.s123-cdn-static.com/uploads/4407810/normal_5fc5bb6fee440.pdfIn PDF document text
    • https://cdn.sqhk.co/pixafosabow/kDn1lii/bluestone_lane_los_altos_reservations.pdfIn PDF document text
    • http://mekikapuleka.22web.org/lg_4g_lte_full_reset.pdfIn PDF document text
    • https://cdn.sqhk.co/toromerepowa/i14jhij/hockey_statistics_app_tablet.pdfIn PDF document text
    • https://cdn.sqhk.co/sozimelizak/hijbbYx/crazy_zombie_9_hacked_arcade_games.pdfIn PDF document text
    • https://cdn.sqhk.co/tenotitur/ghKdhcc/on_my_own_les_miserables_lyrics_karaoke.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471706/normal_60004d1d24045.pdfIn PDF document text
    • http://xteenware.online/jurassic_park_operation_genesis_pc_download_utorrentfto7s.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402520/normal_6011002361833.pdfIn PDF document text
    • http://899themes-demo.ru/62399102660tdg2m.pdfIn PDF document text
    • https://cdn.sqhk.co/filodomazora/ifPjdEM/dizziness_and_heart_palpitations_during_pregnancy.pdfIn PDF document text
    • http://dorightunion.com/13808746682wq4f7.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/marimejerebo/board_game_templates_free.pdfIn PDF document text
    • http://rozixan.rf.gd/31448666717.pdfIn PDF document text
    • http://zonuzaxesinok.rf.gd/best_quotes_from_the_beautiful_and_damned.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_off0000e3ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3CE 4880 bytes
SHA-256: 8f1372ed984d17fa8f3dd17ee7ac380767a4217db089e1261f1717f89e4e96ae
font_01_sfnt_off0000f484.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF484 10948 bytes
SHA-256: 3cc2617078761fc8ad9518620096882cb6d3664bdfc275e8668f01d6e0e35571