Malicious PDF — malware analysis report

Static analysis result for SHA-256 5aa67edd77651488…

MALICIOUS

PDF

72.6 KB Created: 2021-02-02 21:18:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 2b2866ecc55e29e05b56c782e6080121 SHA-1: 475e41afe84f816fc8aead70f3be57a45f16926c SHA-256: 5aa67edd77651488ccd2db7cee7d18408db89090f67d175de5a0f14b9df3481d
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/aws?utm_term=netflix+app+para+android+7.+0 In PDF document text
    • http://momentshop.website/peace_like_a_river_satbkif4e.pdfIn PDF document text
    • http://biolinkus.me/xuvuzunatezobyx9bw.pdfIn PDF document text
    • https://zojujevekuki.weebly.com/uploads/1/3/0/9/130969212/2217152.pdfIn PDF document text
    • http://prostochillforum.fun/vestigial_sideband_transmission_in_tv4u9a5.pdfIn PDF document text
    • https://cdn.sqhk.co/nivodoruw/5diot2u/microsoft_planner_vs_trello_2019.pdfIn PDF document text
    • http://love-your-lips.online/91801699512mjnao.pdfIn PDF document text
    • https://xubivolimoba.weebly.com/uploads/1/3/0/7/130740090/turipigobuf-xedek.pdfIn PDF document text
    • https://cdn.sqhk.co/nolagutotato/1hd6hj9/86288942823.pdfIn PDF document text
    • https://cdn.sqhk.co/navuwamas/jqicCia/iron_man_bomb_game_download.pdfIn PDF document text
    • https://cdn.sqhk.co/butiluluvuk/dAhhwha/46794012946.pdfIn PDF document text
    • https://cdn.sqhk.co/wuguwivusota/ilWajbg/82830095192.pdfIn PDF document text
    • http://1cats.space/56727553623o9hl9.pdfIn PDF document text
    • https://cdn.sqhk.co/fumamimed/cIF9jiP/73087857454.pdfIn PDF document text
    • https://cdn.sqhk.co/sezabaxo/8jaPidj/mamujixobevenos.pdfIn PDF document text
    • http://insta-sale.site/lixijuzamemubs6k9w.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_off0000df9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF9E 5148 bytes
SHA-256: 6a8bae601251052f52d18540ab812d39f9079656f7f2f2b7440508cbb1a0fc29
font_01_sfnt_off0000f149.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF149 10664 bytes
SHA-256: 9b690294e2cc5c58700d13e4fd586cbab285e721d51b7893095399a371f9584d

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