Malicious PDF — malware analysis report

Static analysis result for SHA-256 863f7c2ed4988646…

MALICIOUS

PDF

72.8 KB Created: 2021-03-01 04:55:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: f4d6028013e461e78ffefc6187e9109e SHA-1: 974c9d5243c8cb5a2baf94c6847b7e3d6643a386 SHA-256: 863f7c2ed4988646d92e2249ac56a531803d7b0a8c46d69025e1c713d3ada293
184 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
  • 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://crophysi.ru/award?keyword=ba+ii+plus+tvm+tutorial In PDF document text
    • http://vvinorama.website/19042763855djevd.pdfIn PDF document text
    • http://ketadiets.site/dengue_fever_management_guidelines_20159v1on.pdfIn PDF document text
    • http://kefets.xyz/the_walking_dead_season_3_game_wallpaperhhhbk.pdfIn PDF document text
    • https://cdn.sqhk.co/zajujinul/hgficgc/game_center_app_not_showing.pdfIn PDF document text
    • http://zixudisomiv.22web.org/aadat_tu_meri_song_sucha.pdfIn PDF document text
    • https://savejoxip.weebly.com/uploads/1/3/4/7/134722189/zokutopunuje.pdfIn PDF document text
    • http://samo-katim.ru/zenito8u3i.pdfIn PDF document text
    • http://daduriwikoniza.22web.org/goliwudaw.pdfIn PDF document text
    • https://wabexerimib.weebly.com/uploads/1/3/0/7/130739061/2244370.pdfIn PDF document text
    • https://cdn.sqhk.co/supopareso/zvnggig/nyc_weather_radar_in_motion.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456376/normal_6027b0377bf17.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423137/normal_6002c32684da6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463287/normal_5fe3dd248e909.pdfIn PDF document text
    • https://cdn.sqhk.co/vexedobasof/lWmhghj/new_guitar_mp3_ringtone_download_pagalworld.pdfIn PDF document text
    • http://raisinshub.club/simple_calculator_free_for_windows_8u1ktc.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/moduluzuxikari/cydown_deb_file.pdfIn PDF document text
    • https://s3.amazonaws.com/wupagivoz/benzaldehyde_oxime_formation.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_off0000e0fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0FC 5072 bytes
SHA-256: f56c420783bbd9de4d8c2047a380cc7e1d6f789390d41f08f3e1cbc904d9e35a
font_01_sfnt_off0000f22c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF22C 10632 bytes
SHA-256: 75c2112daa7f8f5c85f82ee26da61b306a3fc150bdc83d023df58eac0795da02