Malicious PDF — malware analysis report

Static analysis result for SHA-256 85e0431502008c8c…

MALICIOUS

PDF

87.8 KB Created: 2021-03-01 22:22:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 289d27acd6f0f95d73ff9dcb99833d03 SHA-1: dd706ab1006caae12964475c0742a5d7fdf8bd35 SHA-256: 85e0431502008c8c8f2c154bed1f030837bce19e7ddbca09fac2215ca42cbfcb
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. While no scripts were explicitly extracted, the presence of embedded URIs and the overall detection suggest an attempt to deliver a payload or phish credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/strik?utm_term=what+is+the+handmaid%2527s+tale+about+on+hulu PDF link annotation
    • http://reduslim-buy.site/html_form_input_submit_button_imagej34zb.pdfIn PDF document text
    • http://getallcreditscores.info/bukedde_tv_app0i1ie.pdfIn PDF document text
    • http://priz24.site/hamartia_in_hamletnbb29.pdfIn PDF document text
    • http://missunik.space/among_the_baronsq969d.pdfIn PDF document text
    • http://bupedezokeromon.iblogger.org/2008_dodge_avenger_sxt_v6_specs.pdfIn PDF document text
    • http://pitushok.fun/dell_n4050_driver_supportlkyf6.pdfIn PDF document text
    • http://mimasajikataza.iblogger.org/baccho_ka_game_ki_video.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412394/normal_5fdb81312f0b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392871/normal_600cf7a7a2205.pdfIn PDF document text
    • https://cdn.sqhk.co/gogefaman/LimiiHd/tropico_5_oder_6.pdfIn PDF document text
    • https://cdn.sqhk.co/gagobuniponi/hihjzid/lufisapijeso.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xevatukojubu.epizy.com/wezavowimepetoromumoxap.pdfIn PDF document text
    • https://s3.amazonaws.com/wunojipu/plano_callejero_bruselas.pdfIn PDF document text
    • https://s3.amazonaws.com/tanapilamaxi/58006471401.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/sql_server_2014_sp2_standard.pdfIn PDF document text
    • https://s3.amazonaws.com/jotizifime/kotepasogibu.pdfIn PDF document text
    • http://zutotakome.epizy.com/acid_alkaline_diet_for_dummies.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_off00011b5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B5C 5156 bytes
SHA-256: 94640cc473bcfb441104c71957b783394f3274eca6b393769f1de878acaaba2f
font_01_sfnt_off00012ccf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CCF 10796 bytes
SHA-256: 720d1250163f81262b8101ec03c5557a0c9ff6c846f3f6f8d46ce6e7caffe3a0