Malicious PDF — malware analysis report

Static analysis result for SHA-256 1064e9ae6a30b1b7…

MALICIOUS

PDF

78.4 KB Created: 2021-03-01 15:17:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 38a1aee08d2eab9d1d28623fde4c21f2 SHA-1: 78f60782859082d3014c30679b50db9551f5d39c SHA-256: 1064e9ae6a30b1b76b8658cc2fb6fa3b1b8b903991a8d80aedc060b7724a80db
126 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external URIs pointing to disposable hosting, suggesting a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, appears to be a lure related to a book title, likely to entice clicks on the embedded URLs.

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
  • 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://dugedepap.ru/award?keyword=libro+pensar+r%25C3%25A1pido+pensar+despacio+kahneman+pdf+gratis PDF link annotation
    • https://cdn.sqhk.co/manigonodapu/chaigA3/note_taking_app_android_2020.pdfIn PDF document text
    • http://lumobumekola.getenjoyment.net/cuisinart_electric_fondue_set_power_cord.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449183/normal_5fdb8ce2ea54f.pdfIn PDF document text
    • https://cdn.sqhk.co/zepipawetopi/ikIhcjd/lesikedafekowinijonogo.pdfIn PDF document text
    • http://foxilajat.sportsontheweb.net/best_certification_courses_for_business_analytics.pdfIn PDF document text
    • http://rotixumuzu.22web.org/57514493254.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380214/normal_5ff5bcf45f69c.pdfIn PDF document text
    • http://pixelbarista.com/ninja_professional_1500_wattszlkcv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489042/normal_602429a40bd1b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460057/normal_5fd8aee835968.pdfIn PDF document text
    • http://poxumanavofeboz.scienceontheweb.net/where_does_the_house_on_mango_street_take_place.pdfIn PDF document text
    • https://cdn.sqhk.co/xutazazo/ieSnyib/pac_man_ghost_names_and_colors.pdfIn PDF document text
    • http://bumasujofoj.getenjoyment.net/manhattan_state_hospital_wards_island_records.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ligexaxo.epizy.com/trig_identities_sheet.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_off0000f0ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0AE 5916 bytes
SHA-256: d2ad5acc4c54a788f89cde5bf81a275d5e30549bd25b3f4a83638f760ac52fad
font_01_sfnt_off00010418.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10418 11584 bytes
SHA-256: 41545b0bca87821daa4431901de119b1ab3f86e2e2b60006a5a4993a09edf1cd

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