Malicious PDF — malware analysis report

Static analysis result for SHA-256 708d3f5e54ed4dab…

MALICIOUS

PDF

70.5 KB Created: 2021-02-10 16:08:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 07b420e7d129dedab63327a02e1d1d16 SHA-1: e028897d186f5be69e23a8688ecdc4ec414b076f SHA-256: 708d3f5e54ed4dab4757a32fbe934127290b7b08953a40e5f12bc3e2db052001
184 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
  • 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://crophysi.ru/wb?keyword=google%20spreadsheet%20highlight%20duplicate%20values In PDF document text
    • http://ampinternational.org/xezuxufovapufoxaxomatajubptxpn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383923/normal_600439c30fea2.pdfIn PDF document text
    • http://on-arenas.com/basn_ve_rzgarlar_slaytanxa7.pdfIn PDF document text
    • https://cdn.sqhk.co/bulixanejad/iahewjb/cadex_medication_reminder_medical_alert_watch.pdfIn PDF document text
    • http://fullhp.info/benafiramikusufe7fgt9.pdfIn PDF document text
    • http://wowitaly.space/3404909362hq7ys.pdfIn PDF document text
    • https://kibalenujodoziz.weebly.com/uploads/1/3/0/7/130776895/5c1a5dd2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379491/normal_60212928b9306.pdfIn PDF document text
    • https://kixarazebeda.weebly.com/uploads/1/3/0/7/130776474/komede.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373782/normal_5fe00b1120c6d.pdfIn PDF document text
    • https://furimubabo.weebly.com/uploads/1/3/1/8/131856330/wusufomevujugakuze.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/tuzakifezara/50969114886.pdfIn PDF document text
    • https://s3.amazonaws.com/tadevewuju/61637692252.pdfIn PDF document text
    • http://wonegesaf.epizy.com/clash_of_clans_pc_windows_10.pdfIn PDF document text
    • http://tadiwolavis.epizy.com/12401821508.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_off0000d302.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD302 5428 bytes
SHA-256: fbab184ab22935b6dd09ab2a5205f94bb8a5f05c0b63f9abe4e8e3a46cb226ff
font_01_sfnt_off0000e57e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE57E 11752 bytes
SHA-256: db9e0112c6f751e4175d7e82b67cee83882e7bf6a0c1550e03a78cf8ae5fa1cb