Malicious PDF — malware analysis report

Static analysis result for SHA-256 94bf7787e99d87c7…

MALICIOUS

PDF

66.8 KB Created: 2021-02-28 04:41:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: dcd79ace1d4d5702cdab1dd08535da4a SHA-1: a227d99badb05bd671e3f56276470a6dc524c865 SHA-256: 94bf7787e99d87c71b6e25e2f8586f7b382186c08efe945eec42f30bfec37f4d
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'resalured.ru', which is likely used to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool sometimes used to create malicious PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9715

Heuristics 3

  • 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
  • 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://resalured.ru/award?keyword=blackjack+weapon+meaning PDF link annotation
    • http://exampl1214.com/pretty_girls_like_trap_music_downloagllxp.pdfIn PDF document text
    • http://bupro.asia/36333997703qe3px.pdfIn PDF document text
    • http://spencermcman.us/91273166912927xk.pdfIn PDF document text
    • http://momentshop.website/73414591698i4yy4.pdfIn PDF document text
    • http://itwow.info/44680331664np1ao.pdfIn PDF document text
    • http://1freedom.space/bmat_s2_assumed_knowledge_guidefsrt4.pdfIn PDF document text
    • http://coolstudent.space/2903718880yx1gy.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392857/normal_5ff0ba883c394.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413703/normal_5fed31a9804d9.pdfIn PDF document text
    • http://chestlune.online/pilezulakiwisemabusasulewqzq3r.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fewunadupop/votarunijuxupivonaburu.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/laravel_admin_template_github.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/interview_tips_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/bisiku/certificate_of_insurance_form_fs-_1.pdfIn PDF document text
    • https://s3.amazonaws.com/xotomisen/life_fitness_x3_elliptical_price.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9CE 5260 bytes
SHA-256: 627c63589ea1f736672181f7a1949bbd5e90ee14467390145366c66c3a562cd9

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