Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddbe58b8dd8329cf…

MALICIOUS

PDF

69.3 KB Created: 2021-02-06 22:42:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 71e5fee4a337a8f7f342049a50337eab SHA-1: 6d176321cb4b075045eca018812699088ace73ef SHA-256: ddbe58b8dd8329cf34dc0880af6f0fbca186006ac212fc494b973a026ee2e650
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/wb?keyword=attachment%20quiz%20pdf PDF link annotation
    • https://cdn.sqhk.co/ravuviwidi/5jhB3pW/pyramid_runner_2_free_download.pdfIn PDF document text
    • https://farazekij.weebly.com/uploads/1/3/4/3/134379469/6813c6.pdfIn PDF document text
    • https://cdn.sqhk.co/xajamenujo/ogjEIUc/88005778200.pdfIn PDF document text
    • http://zitutetek.22web.org/jre_1._6_filehippo.pdfIn PDF document text
    • http://fitit.space/el_viaje_del_heroe2bhyu.pdfIn PDF document text
    • http://gevixadita.22web.org/68463148763.pdfIn PDF document text
    • https://cdn.sqhk.co/gixejefi/5HEShbr/taboxojamafevab.pdfIn PDF document text
    • https://cdn.sqhk.co/gawagunikuw/tHMnOhe/todolist_abstractspoon_theme.pdfIn PDF document text
    • http://nicechange.space/scentsy_scentsational_start_level_1pwyzy.pdfIn PDF document text
    • https://cdn.sqhk.co/podidiwi/Bhidje2/nironurobisimilikirebode.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://motoded.epizy.com/42669037446.pdfIn PDF document text
    • http://watokugen.epizy.com/market_leader_intermediate_answer_key_unit_6.pdfIn PDF document text
    • http://dapodakek.rf.gd/10543314180.pdfIn PDF document text
    • http://rafopaju.rf.gd/aplikasi_edit_video_android_2019.pdfIn PDF document text
    • http://banobozibijur.epizy.com/43473461360.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_off0000d380.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD380 5252 bytes
SHA-256: 6f77f01e9a257d7fda9b6725f32f53e9a2c04ac37f9e122bc93da5eb44d3ee49
font_01_sfnt_off0000e549.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE549 10408 bytes
SHA-256: df7f60491f139fa5a3abd7cdd886aad5a28e7fca7eb492de4faea67b3ee010ec