Malicious PDF — malware analysis report

Static analysis result for SHA-256 43c8677f5f15b36e…

MALICIOUS

PDF

76.7 KB Created: 2021-02-13 09:16:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7b507bcbf9b4d7c02390cf325091e31c SHA-1: e85bb63ffe0c7067930614cf1346bd4785c5a5ab SHA-256: 43c8677f5f15b36ec222ceca451f52b5a70bb1f4bd68b5c7ca7ffc2c81ef08d6
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/123?utm_term=lotro+trait+point+guide PDF link annotation
    • http://boothattendant.com/winerosufunobuvsl.pdfIn PDF document text
    • http://fruit-ita.fun/16192605958ebpfu.pdfIn PDF document text
    • https://cdn.sqhk.co/lixejudazeza/Ts4mUSG/dining_room_sets_modern_el_dorado.pdfIn PDF document text
    • https://cdn.sqhk.co/jasowipe/gijuigF/29781085054.pdfIn PDF document text
    • http://thedefenseforge.com/tuzumaritilafijib2widt.pdfIn PDF document text
    • https://cdn.sqhk.co/tejilunuf/ijOihgj/30045703542.pdfIn PDF document text
    • http://max-lifting.store/76601293571dih3v.pdfIn PDF document text
    • https://cdn.sqhk.co/vesagivara/cvh18BB/52119859130.pdfIn PDF document text
    • http://intekzafast.online/23592646881wsypi.pdfIn PDF document text
    • https://cdn.sqhk.co/fiporalisu/icBlhc6/birthday_cake_with_name_and_pic_editor.pdfIn PDF document text
    • https://cdn.sqhk.co/sadisadaz/uFhbhjh/mystery_manor_hidden_object_game_cheats.pdfIn PDF document text
    • http://goodsun.space/shoulder_dystocia_maneuvers5cw6y.pdfIn PDF document text
    • http://policyhelpcenter.com/kingo_android_root_apk_2018voct1.pdfIn PDF document text
    • https://cdn.sqhk.co/nifodotiriru/hcgDjie/90843088037.pdfIn PDF document text
    • https://cdn.sqhk.co/mojikeke/QA0gfhb/farefuxudufupexo.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/ritoma/asoka_movie_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/business_process_flow_diagram_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/setigafat/extraordinary_ones_heroes_guide.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_off0000f04a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF04A 4856 bytes
SHA-256: 852249be577ac918a4793936c85255a5467f30f4096b2dff4f11a15273db1c42
font_01_sfnt_off000100de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100DE 11028 bytes
SHA-256: fb079be362853b0a679a219168759c6bd9120433d2dbe8325efd7b3fc216ed47