Malicious PDF — malware analysis report

Static analysis result for SHA-256 2abd2cadca929d02…

MALICIOUS

PDF

73.6 KB Created: 2021-03-27 20:58:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 691f971a2123d7ab66ff7c6c0cedecf4 SHA-1: 13c94096cc6a4f94f334545c7b9318765b26e97e SHA-256: 2abd2cadca929d0279ac97a3d4274259b69b40f82c58dc5b79ca90a3fe9f7165
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, identified as malicious by ClamAV and ML classifiers. The document body, though heavily obfuscated, appears to be a deceptive lure related to a common search query. The presence of external URIs suggests an attempt to redirect the user to a malicious site for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://vilenefex.ru/strik?utm_term=does+wendy%2527s+frosty+have+dairy
    • https://cdn-cms.f-static.net/uploads/4470961/normal_604dae7862116.pdf
    • http://munasimowijuxi.getenjoyment.net/dejaluwi.pdf
    • https://cdn-cms.f-static.net/uploads/4422150/normal_605592fa099a2.pdf
    • http://tilikef.mygamesonline.org/mimigaxojinelo.pdf
    • http://dudoxanudito.scienceontheweb.net/ascaris_et_ascaridiose.pdf
    • https://cdn-cms.f-static.net/uploads/4384295/normal_600e8d92cb413.pdf
    • https://cdn-cms.f-static.net/uploads/4408172/normal_603017ba183bc.pdf
    • http://gubuxuk.scienceontheweb.net/business_letter_writing_book.pdf
    • https://cdn-cms.f-static.net/uploads/4369777/normal_6022feaebe01e.pdf
    • https://cdn-cms.f-static.net/uploads/4480736/normal_6032814e1aff4.pdf
    • https://cdn-cms.f-static.net/uploads/4392218/normal_604dace6a3ebd.pdf
    • https://cdn-cms.f-static.net/uploads/4497358/normal_605182f4236f8.pdf
    • https://cdn.sqhk.co/soxuvezosapa/9iagXxU/63395267043.pdf
    • https://cdn-cms.f-static.net/uploads/4473023/normal_5fda30908f88c.pdf
    • http://mapotilij.mygamesonline.org/yamaha_exciter_135_service_manual.pdf
    • http://kofupum.mygamesonline.org/kinesics_nonverbal_communication.pdf
    • https://static.s123-cdn-static.com/uploads/4457590/normal_5fcf79138cd3d.pdf
    • https://cdn.sqhk.co/bulegumu/gidiihs/lasagikakem.pdf
    • http://jalazekesofijot.medianewsonline.com/how_to_fix_a_leaky_water_spigot.pdf
    • http://sesizuxewewax.mygamesonline.org/lincoln_electric_ac-225_stick_welder_manual.pdf
    • http://dizititakozazi.mywebcommunity.org/nilememutebelopo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://nakeviw.myartsonline.com/cost_accounting_tutorialspoint.pdf
    • http://gomugugagaf.onlinewebshop.net/mazzaroth_gospel_in_the_stars.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e1cd.bin
8c9a430994d19feda5bfdf42d7f8b1419401dc0997530f0462e896aa35e5813e
pdf-font-stream PDF embedded font (sfnt) at offset 0xE1CD 5252 bytes
font_01_sfnt_off0000f3ca.bin
7cd958052db3f641ee38b25f51a9436a4a0cd7192a97fe06d3274f9de6b4d476
pdf-font-stream PDF embedded font (sfnt) at offset 0xF3CA 10940 bytes