Malicious PDF — malware analysis report

Static analysis result for SHA-256 93cf20e5044153d2…

MALICIOUS

PDF

62.2 KB Created: 2021-02-12 03:29:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 05251563b408357982beb8303c6d2518 SHA-1: 785c463338367c24bc2118b83cd4a03e4ba62dc9 SHA-256: 93cf20e5044153d25443a240c696ce790763af2ba91d78d79ec4b5dddec1c22e
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/wb?keyword=telefonos%20android%20economicos%20mercadolibre%20venezuela In PDF document text
    • https://movediwifed.weebly.com/uploads/1/3/2/6/132695881/zigeduke_xonekaminuva_jofewopofavi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482631/normal_60099961966bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386848/normal_5fd158556c52e.pdfIn PDF document text
    • http://mon-cmso.best/polycom_hdx_8000_integrators_manualdqw82.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471948/normal_5fe1ad70ed224.pdfIn PDF document text
    • http://bitcoinlearningcentre.online/drive_ahead_apk_mod_unlimited_moneylfa80.pdfIn PDF document text
    • http://mutodute.22web.org/confidentiality_statement_template.pdfIn PDF document text
    • https://bopugokux.weebly.com/uploads/1/3/4/9/134901566/lopoje-vusuvobaxomob.pdfIn PDF document text
    • http://fragcups.com/2003_hyundai_santa_fe_shop_manualmnxhh.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lopejad.epizy.com/jiwebede.pdfIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/17846775719.pdfIn PDF document text
    • http://bejofumojep.rf.gd/gavubasofetipuzasa.pdfIn PDF document text
    • http://ritipoma.epizy.com/clarke_county_mississippi_arrest_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/xakapudakadu/61304976081.pdfIn PDF document text
    • https://s3.amazonaws.com/zubata/goldstone_infratech_annual_report.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_off0000b59d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB59D 5364 bytes
SHA-256: f89cfb75296bed37e053422343acd7a3b392e5beca5abe0b6766178a1e0482d2
font_01_sfnt_off0000c7d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7D6 10272 bytes
SHA-256: 40bb04ae1218202936da1ab2a5469764e7936b20ebe8542df55e6b738e9ca8c5