Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b27e70968a924fe…

MALICIOUS

PDF

77.1 KB Created: 2021-03-19 04:22:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5032bfbee90dec6b28e1024d681d33e9 SHA-1: 17b26ee62f08b7b8b1edd164e8893e182bf3b5ff SHA-256: 5b27e70968a924fe64ef7fd8f5899ed6f1d52697fddf0e1de0b32081fe87d6ef
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, 'soxebez.ru', which is likely used to host a phishing page or download a secondary payload. The document body, though heavily obfuscated, suggests a lure related to a 'medal masters guide pdf'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://soxebez.ru/wix?keyword=medal+masters+guide+pdf
    • http://shopwithsale.website/mechanical_vibrations_6th_edition_ebookv669s.pdf
    • https://static.s123-cdn-static.com/uploads/4454820/normal_6006012bba47f.pdf
    • https://cdn-cms.f-static.net/uploads/4368468/normal_6027629a520d3.pdf
    • http://jsexj.fun/77704426562t1f9g.pdf
    • http://sweetmeet.online/tawubemevijezarakepkki3w.pdf
    • http://matroskin.space/sbi_personal_loan_detailsz66ju.pdf
    • http://santecmb-sarl.com/les_miserables_book_1_charactersm35jf.pdf
    • http://copyrighthelpbusiness.net/76567616071h5t4p.pdf
    • https://cdn-cms.f-static.net/uploads/4450148/normal_601a9e396a2c3.pdf
    • http://amst-watch-v2.club/roblox_livre_robux_gerador_pcggqxh.pdf
    • http://rmk4sale.xyz/23379616764oziqr.pdf
    • https://cdn-cms.f-static.net/uploads/4448346/normal_6025df4105c50.pdf
    • http://grigolia-studio.ru/stickman_rope_hero_2_hack_game_downloadsac3f.pdf
    • http://rezonansmusic.com/highway_capacity_manual_2000c4drx.pdf
    • http://giveaway2020.info/nimawesunoxob9gsd.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/778bb805-c163-4611-975a-5691b644fbfd/a_connecticut_yankee_in_king_arthurs_court_chapter_3_summary.pdf
    • https://s3.amazonaws.com/jojitagifuva/69504993670.pdf
    • https://uploads.strikinglycdn.com/files/2e7b1e15-dcc4-4346-9922-6f8aaf37f580/the_conversion_code.pdf
    • https://s3.amazonaws.com/tokudapele/4927661570.pdf
    • https://uploads.strikinglycdn.com/files/2287e6c1-7f34-4e9d-a5f7-a5a71d460a67/what_is_the_nash_equilibrium_and_why_does_it_matter.pdf
    • https://s3.amazonaws.com/zonebon/bolufedevodo.pdf
    • https://uploads.strikinglycdn.com/files/04a4efbe-4da5-4fc7-96fc-22ed87b6c58a/15841491726.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_off0000ef38.bin
4eb272f5d6a280fe6e4e5b903879b1bbfef823e74749ed78d250776945701aaa
pdf-font-stream PDF embedded font (sfnt) at offset 0xEF38 5364 bytes
font_01_sfnt_off0001016f.bin
a5425ba1479016ecf73e372330018ef01c80ca9f01cfcdf43e067902f848a1e2
pdf-font-stream PDF embedded font (sfnt) at offset 0x1016F 11044 bytes