Malicious PDF — malware analysis report

Static analysis result for SHA-256 59f5f2674618265a…

MALICIOUS

PDF

70.7 KB Created: 2021-02-07 05:00:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 9fa4dc998688ed430623a911ba18b8d3 SHA-1: fee32243f7081bc72d24f3f2069e1c3fb6755adb SHA-256: 59f5f2674618265a892ff8e384cad6dbda5bd29e81ab1269a58c6bb74729b5c9
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://baarspo.ru/wb?keyword=vex%20robotics%20software PDF link annotation
    • https://cdn.sqhk.co/xanikadir/iee5jgY/31797107235.pdfIn PDF document text
    • https://pesadoxemanuz.weebly.com/uploads/1/3/4/8/134852899/edd3f6c.pdfIn PDF document text
    • https://cdn.sqhk.co/semegopo/hGLNgjc/wivorunuletutala.pdfIn PDF document text
    • https://donurufeto.weebly.com/uploads/1/3/4/8/134898164/giluwa-vixirosudawaw-notawovujaxi.pdfIn PDF document text
    • https://jenamojid.weebly.com/uploads/1/3/1/0/131070605/nuleguvusadim.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487423/normal_5fc94dabe5b29.pdfIn PDF document text
    • https://cdn.sqhk.co/metusoteliza/ijQ2ggL/xbox_360_wireless_headset_on_pc.pdfIn PDF document text
    • https://jifofavara.weebly.com/uploads/1/3/4/6/134631997/188508.pdfIn PDF document text
    • https://venolebibu.weebly.com/uploads/1/3/5/3/135348563/bugepobex.pdfIn PDF document text
    • http://vobonenagixavus.66ghz.com/amelia_bedelia_means_business_guided_reading_level.pdfIn PDF document text
    • http://letilemugemin.66ghz.com/77973133472.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366350/normal_5ff7ab37a0a3f.pdfIn PDF document text
    • https://cdn.sqhk.co/nakunadubux/cAhb6Vf/tiny_township_farmers_market.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dimaninerif.rf.gd/penatoworekiw.pdfIn PDF document text
    • http://jadupapobixe.epizy.com/bayesian_methods_for_data_analysis_solutions_manual.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_off0000d667.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD667 5108 bytes
SHA-256: 583703202670db3a8734e025dc8bd911459ed07ae5afe578995759c4b730ee95
font_01_sfnt_off0000e7f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7F7 11852 bytes
SHA-256: 20f5e56750c22364a174bb8a1fa91c09e51c3f64d7fd8464759500e7afe1f72a