Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f78be9fa8edea22…

MALICIOUS

PDF

73.2 KB Created: 2021-02-12 12:44:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 8326711d2f0114dcf1fb98f157d6513d SHA-1: c84557d2de670419cb94a1e1e26b099055bb3de8 SHA-256: 8f78be9fa8edea221d4ea1550537eea48ac19205a512fe5c17ff66f57e03ba5f
126 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
  • 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://jacksth.ru/wb?keyword=cardinal%20and%20ordinal%20utility%20theory%20pdf PDF link annotation
    • http://com-connexion.xyz/ohm_walsh_tall_reviewgav7u.pdfIn PDF document text
    • https://cdn.sqhk.co/zafupusapun/gjhvGjh/46907086948.pdfIn PDF document text
    • https://cdn.sqhk.co/xenudipu/c2hb9mo/53306233250.pdfIn PDF document text
    • http://kungfumalibu.com/ata_chapter_56rxo1s.pdfIn PDF document text
    • https://cdn.sqhk.co/vawikepaf/Iibzgx3/rewodi.pdfIn PDF document text
    • http://help-lnstagram-verifycopyrgiht.com/acueducto_romano_de_segoviamv5x5.pdfIn PDF document text
    • https://cdn.sqhk.co/luvuxokam/mhedToY/anime_magic_powers_quiz.pdfIn PDF document text
    • http://slimerecipe.org/japanese_and_european_feudalism_worksheet_answersp5ot1.pdfIn PDF document text
    • http://alex-travel.moscow/gta_5_money_cheat_pc_offlinesfr16.pdfIn PDF document text
    • https://cdn.sqhk.co/koroxofusino/hj30wje/8052970505.pdfIn PDF document text
    • https://cdn.sqhk.co/denepepunuja/ibjimhf/sage_the_gemini_new_song_2019.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nakepusejedub.epizy.com/new_afib_guidelines_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/california_go_math_kindergarten_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/paxuvagal/livogegetelu.pdfIn PDF document text
    • https://s3.amazonaws.com/fadedosi/19479960064.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_off0000e213.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE213 4956 bytes
SHA-256: 95b8b03560eecd29b9b34c45db6f55f730b24812ea9fe526d2399f8224c70510
font_01_sfnt_off0000f2ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2ED 10360 bytes
SHA-256: fe877bc1060b7d84569ca02eee2098e704e1c9f3f15d4dcace08710b5326dd8d