Malicious PDF — malware analysis report

Static analysis result for SHA-256 86d9a2b698ad51b7…

MALICIOUS

PDF

69.5 KB Created: 2021-03-03 04:06:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 2dd1240b1c8fe7ce65f1c90bfd9cbf5c SHA-1: e228efa5ac2b19af647eb9fa73ab7de8a5cc2885 SHA-256: 86d9a2b698ad51b77ba1cafef8101c148290d8afbaab8f7eb88d943984c99f2c
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 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/123?utm_term=the+secret+life+of+plants+stevie+wonder+lyrics In PDF document text
    • https://nuwoveforu.weebly.com/uploads/1/3/4/0/134099073/xilisaxuvatis_jobofoxir_nemuwi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486523/normal_5fffea1bcb2a3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480904/normal_5fefa5de0edbb.pdfIn PDF document text
    • http://xagakojitogiva.getenjoyment.net/mojos.pdfIn PDF document text
    • http://nowefewafugaki.iblogger.org/tl-wr841n_v13_openwrt.pdfIn PDF document text
    • https://wozizagozesa.weebly.com/uploads/1/3/4/8/134848764/74d9ff19cb6e.pdfIn PDF document text
    • https://xaweworamek.weebly.com/uploads/1/3/4/6/134610398/0804b5e76a3.pdfIn PDF document text
    • https://dametubidino.weebly.com/uploads/1/3/1/3/131383661/xesej.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://monazureme.epizy.com/craftsman_garage_opener_not_working.pdfIn PDF document text
    • http://pudekixepubaz.epizy.com/42587584020.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/rujonijuruxanaja.pdfIn PDF document text
    • http://kiwozoma.epizy.com/39209839442.pdfIn PDF document text
    • http://kuzemepusiloj.onlinewebshop.net/what_size_carry_on_bags_are_allowed_on_airplanes.pdfIn PDF document text
    • http://nekopujopulo.rf.gd/21306136830.pdfIn PDF document text
    • http://kunibenurupamiv.rf.gd/how_to_poach_eggs_in_a_silicone_egg_poacher.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_off0000cf6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF6B 5448 bytes
SHA-256: f26065fcd6ca5f356c101509681c4fd226b603f796cb3b699faa1c418c302f2c
font_01_sfnt_off0000e206.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE206 11296 bytes
SHA-256: 744a980bd393f2abfae69f9461fea5603c140658f27263c86c8fa12b315be956