Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcd9d3d52012f767…

MALICIOUS

PDF

79.5 KB Created: 2021-03-19 23:08:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ae4f6df0f795225817c9d2b52ee20e8 SHA-1: 64164812aee5bd1ce715e414de3e93cab060f501 SHA-256: dcd9d3d52012f7678a28403c24df5926513dbb64af67e6f1743a97156eb5ebe9
96 Risk Score

Malware Insights

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

The file was detected as a malicious PDF by ClamAV and an ML classifier. It contains an embedded URI pointing to 'https://botokaw.ru/wix?keyword=one+point+perspective+drawing', which is likely used to redirect the user to a phishing or malware distribution site. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of external URLs and the malware detection strongly suggest a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://botokaw.ru/wix?keyword=one+point+perspective+drawing
    • https://static.s123-cdn-static.com/uploads/4452865/normal_5fee13aad2fe3.pdf
    • https://static.s123-cdn-static.com/uploads/4457881/normal_6008d302def6f.pdf
    • https://cdn.sqhk.co/wejupexuput/jhTkjd3/35721150031.pdf
    • https://cdn-cms.f-static.net/uploads/4421354/normal_601f8000beccf.pdf
    • https://cdn.sqhk.co/betewulo/jgOWjjT/53909056761.pdf
    • http://copyrightshelpcenter.com/52122026758kgwj.pdf
    • https://kovapuneluwaze.weebly.com/uploads/1/3/2/3/132302913/8207567.pdf
    • http://kmikaerfs.ru/theseus_and_the_minotaur_statue_for_saleizpdj.pdf
    • http://ourfutures.space/sticker_wa_anak_kecil_korea_viralii0nt.pdf
    • http://logmeinnow.xyz/how_to_clean_honeywell_hcm-35048qgf.pdf
    • https://static.s123-cdn-static.com/uploads/4385030/normal_6003d2c787733.pdf
    • https://molapoji.weebly.com/uploads/1/3/4/0/134096941/zabir_xesupiza.pdf
    • https://kunubukom.weebly.com/uploads/1/3/4/5/134599245/7c7a27ba1c3fb1.pdf
    • https://cdn.sqhk.co/zenegiwowi/jieIF8P/21395500239.pdf
    • http://help-feedback-amzn6.xyz/tom_clancys_the_division_2_gameplay_single_playerp9h97.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://nemebikox.epizy.com/angular_template_variable_scope.pdf
    • https://s3.amazonaws.com/sazixipame/vagiminakeko.pdf
    • https://s3.amazonaws.com/vunizi/whose_names_are_in_the_lambs_book_of_life.pdf
    • http://dimexibagumaza.epizy.com/letter_w_pictures_free.pdf
    • http://potefedezazox.rf.gd/61153623908.pdf
    • http://keputeka.epizy.com/32170073594.pdf
    • https://s3.amazonaws.com/pafexegud/nobudigidimebetomoxaj.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_off0000f9db.bin
d3894c4cdf4e7e190d27c4078aa4e15f76f57161c97e6bc716ca0bfce518a8e9
pdf-font-stream PDF embedded font (sfnt) at offset 0xF9DB 5388 bytes
font_01_sfnt_off00010c53.bin
6dfee4f7b2b200882315d64ddd000773e927430904bc498740b4e8abf1373529
pdf-font-stream PDF embedded font (sfnt) at offset 0x10C53 10720 bytes