Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2d18a195c7d5133…

MALICIOUS

PDF

71.2 KB Created: 2021-02-22 05:37:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d71f5557bc579deb9f2c97dfb68e14d8 SHA-1: 7014b2b26ce34c65407d73eb3370efaf63b1180f SHA-256: e2d18a195c7d5133b0e1d500b8305c15d279acb865e5b1db5e90e104f14ff702
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • 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://bologen.ru/wix?keyword=hero+wars+cheats PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4420608/normal_5fda68bb8d272.pdfIn PDF document text
    • https://gigunomivu.weebly.com/uploads/1/3/0/9/130970016/9516799.pdfIn PDF document text
    • https://cdn.sqhk.co/dosakupu/6Yj7fcK/pirunexaz.pdfIn PDF document text
    • http://buvavarosavadar.iblogger.org/xsplit_broadcaster_windows_7_64_bit.pdfIn PDF document text
    • http://konobemozitu.iblogger.org/30472257918.pdfIn PDF document text
    • https://cdn.sqhk.co/xogedusov/hfbhbhi/heist_bank_clicker_game_for_private_group.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450427/normal_6006677638bf5.pdfIn PDF document text
    • https://cdn.sqhk.co/bogabixexuja/hghhgHe/gudisunololur.pdfIn PDF document text
    • https://cdn.sqhk.co/totudavomud/hd7jaZ1/fireboy_and_watergirl_ice_temple_walkthrough_level_5.pdfIn PDF document text
    • https://cdn.sqhk.co/reposivekow/Iic8noc/pirate_king_facebook_hack_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384817/normal_5fef85968151b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sajidot.epizy.com/16175373187.pdfIn PDF document text
    • http://dupivet.epizy.com/36905400402.pdfIn PDF document text
    • http://lidixikeb.epizy.com/new_assamese_audio_song.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_off0000dd12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD12 4908 bytes
SHA-256: 8c9af291f4f2e93b7e4c638d1424b1d71f4596dc40a2c9ebd8cd0e7b8ffcc98a
font_01_sfnt_off0000edcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDCD 10104 bytes
SHA-256: e7b3a8709cda605b3071317a0f866548f434f8cae17828a64d490da886071904