Malicious PDF — malware analysis report

Static analysis result for SHA-256 87ad59e91fcbd7ed…

MALICIOUS

PDF

66.6 KB Created: 2021-02-23 01:28:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: baefb61e03a959f8bfb91fc8749e1ca7 SHA-1: 34ceb8f4c579f8279235078118e09fc0e53305cf SHA-256: 87ad59e91fcbd7eda5f640c17ae17803d81a4b3de87da295d6468bd757d4b1a0
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/wix?keyword=download+berserk+manga+volume+1 In PDF document text
    • https://cdn.sqhk.co/gusisitixinu/Fgcghgh/mor_sansar_ma_cg_song_mp3_download_pagalworld.pdfIn PDF document text
    • http://suboxobuwofum.iblogger.org/45821760483.pdfIn PDF document text
    • https://nodopemewave.weebly.com/uploads/1/3/2/6/132682748/lulubotofidezobezoru.pdfIn PDF document text
    • https://cdn.sqhk.co/jegivoziba/lMagggf/one_night_ultimate_werewolf_rules_6_player_setup.pdfIn PDF document text
    • https://sekugarotapoze.weebly.com/uploads/1/3/4/3/134362520/xifikelomo.pdfIn PDF document text
    • https://cdn.sqhk.co/tevunufoba/hhQyojb/midefipudokoxonop.pdfIn PDF document text
    • https://xafukulirodut.weebly.com/uploads/1/3/1/3/131379356/01cf5d8421f544.pdfIn PDF document text
    • https://cdn.sqhk.co/kawinojos/Schdsia/among_us_online_no_download_mac.pdfIn PDF document text
    • https://cdn.sqhk.co/gesimefav/Ogjjije/dwts_recap_ew.pdfIn PDF document text
    • https://cdn.sqhk.co/feketukadoz/yia8JoO/dwell_and_slumber_reviews.pdfIn PDF document text
    • http://tukameduk.22web.org/xiwiliwaravowepamigifelux.pdfIn PDF document text
    • https://foworagajiwodim.weebly.com/uploads/1/3/0/9/130969946/705531.pdfIn PDF document text
    • http://dekagexagupeje.iblogger.org/66464324745.pdfIn PDF document text
    • https://cdn.sqhk.co/kinibemazoz/W66IRtV/driver_profile_for_cv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sewoxoxitif.rf.gd/zobenax.pdfIn PDF document text
    • http://limufewugewo.rf.gd/who_landed_in_south_america_first.pdfIn PDF document text
    • http://bekugasil.rf.gd/edital_da_prf_2018.pdfIn PDF document text
    • http://pajimej.epizy.com/questions_and_answers_for_interview.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_off0000c9bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9BB 5552 bytes
SHA-256: 83c00347370fc8b7cf63e07e1ef2832accbe501f2de411abba2ad35475262507
font_01_sfnt_off0000dcaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCAA 9472 bytes
SHA-256: 66fc2f1e05747337eb562e6fb49d9d729557c218998bad6d5dca6b6d1f33af7a

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