Malicious PDF — malware analysis report

Static analysis result for SHA-256 f18b413264dba39a…

MALICIOUS

PDF

71.6 KB Created: 2021-02-19 14:30:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: bc7d45c749c9a4a8a8eef50d2791ac75 SHA-1: 3f8f816b6551bf4762c813fd9fa3e2c52c1d3757 SHA-256: f18b413264dba39aba4689714424104ecd45e3b94cae514ad2b4be0f5386fc2f
136 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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://leonvi.ru/aws?utm_term=who+does+china+give+foreign+aid+to PDF link annotation
    • http://ourfutures.space/77317647816pbdlr.pdfIn PDF document text
    • https://cdn.sqhk.co/banuluwopote/giieih5/custom_stickers_design_online.pdfIn PDF document text
    • https://cdn.sqhk.co/tewokozogop/Ciehh54/cheats_for_gta_5_ps3_lamborghini.pdfIn PDF document text
    • http://ostanni.fun/zuxukoxafeyecrv.pdfIn PDF document text
    • https://cdn.sqhk.co/nazujovo/fjiZWpZ/game_song_ringtone_download_pagalworld.pdfIn PDF document text
    • http://vipmanmarket.space/66981682162tek8t.pdfIn PDF document text
    • https://cdn.sqhk.co/vabalogu/cxK3ifu/63834572991.pdfIn PDF document text
    • https://cdn.sqhk.co/xexisini/utEhfQV/sledziona_dodatkowa_po_angielsku.pdfIn PDF document text
    • https://cdn.sqhk.co/fujalapevame/fhe4igk/minecraft_2020_mob_vote_in_a_nutshell.pdfIn PDF document text
    • http://how2clever.com/32281393841ew2gj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479691/normal_5fd63718c536e.pdfIn PDF document text
    • http://flipping-car.online/xijewiwugkoboh.pdfIn PDF document text
    • https://cdn.sqhk.co/zuwiwejagub/ajiaghi/crossword_clue_concerning_industry.pdfIn PDF document text
    • https://cdn.sqhk.co/tukawezezo/d1zidjb/seeds_for_minecraft_pe_1._16.pdfIn PDF document text
    • https://cdn.sqhk.co/leluforeref/SVnhajh/ravens_depth_chart_ourlads.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dd4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD4C 5324 bytes
SHA-256: b394878cbc56cfb0e7550e24e9d0912673982cc01a66de714c7c2b7002d8ce49
font_01_sfnt_off0000ef76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF76 9936 bytes
SHA-256: a6d719b6eaf083bfc7fd9f548e3009763e144a6e815dfe6ff01c02e907f513a3