Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b0e4e3ecdc843e2…

MALICIOUS

PDF

73.7 KB Created: 2021-03-24 17:00:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 57e1e513fc51b2cc05ab9532a2a8f798 SHA-1: 9e1f5f9175072bc195f1eac1c0ded1d0d040e188 SHA-256: 6b0e4e3ecdc843e24f55bcbc9d7a41585a7ba4324f962ac750994aaf9fc6c14e
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs pointing to external sites, many of which are hosted on disposable domains or link farms, indicating a likely attempt to redirect users to malicious content. The document body, though heavily obfuscated, suggests a lure related to 'Curso de ingles larousse pdf download'. No scripts were extracted from this sample.

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
  • 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://mezovuduw.ru/award?keyword=curso+de+ingles+larousse+pdf+download PDF link annotation
    • https://cdn.sqhk.co/ragojagef/iihatpT/digestive_system_definition_in_english.pdfIn PDF document text
    • https://cdn.sqhk.co/pigevikuwi/fggic7Z/73452645925.pdfIn PDF document text
    • https://cdn.sqhk.co/mibemofega/0xcAhjb/55237094141.pdfIn PDF document text
    • https://cdn.sqhk.co/virixerusupa/jcZZZje/41656896502.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425010/normal_600dd3b23eb20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496402/normal_604029e616a51.pdfIn PDF document text
    • https://cdn.sqhk.co/fuzokikili/gdRijhf/47361475109.pdfIn PDF document text
    • http://dugarudewemudo.sportsontheweb.net/zudomixitavu.pdfIn PDF document text
    • http://mewanomape.iblogger.org/72407796886.pdfIn PDF document text
    • https://cdn.sqhk.co/pigexebobe/Wkjixic/toddler_bunk_beds_for_sale.pdfIn PDF document text
    • https://cdn.sqhk.co/senagoxosog/aicqhfG/weather_forecast_karachi_today_hourly.pdfIn PDF document text
    • http://gojawufeki.getenjoyment.net/vupigosuzalusikuzo.pdfIn PDF document text
    • https://cdn.sqhk.co/laxiroroweno/hdyggjd/51727915667.pdfIn PDF document text
    • http://jisuvakuwiraza.medianewsonline.com/dream_theater_the_astonishing_lyrics.pdfIn PDF document text
    • https://cdn.sqhk.co/wewowedim/tje2Igh/63185557022.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zanelexi.epizy.com/bmw_annual_report_2020.pdfIn PDF document text
    • http://livofos.epizy.com/95643970672.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/61727390078.pdfIn PDF document text
    • http://kivudul.rf.gd/lagu_daerah_aceh_bungong_jeumpa_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/12403077596.pdfIn PDF document text
    • http://mivuturirem.rf.gd/88875557265.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_off0000deca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDECA 5208 bytes
SHA-256: de510820ca23ac3df6729088280a1c4b2203f141e154a442236501fac05214f7
font_01_sfnt_off0000f0a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0A1 12120 bytes
SHA-256: e4c179c2e10c8dc96f079c0989e448e94382a72ce8d4b0c0246870572fadf3b0

Open this report in the interactive analyzer, or submit your own file for analysis.