Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e5c3b89b9ce09ba…

MALICIOUS

PDF

82.4 KB Created: 2021-03-23 10:06:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90d1187325e60e78a960cb06a56fd9af SHA-1: 2acd70e1ecc8a05d70c2fce7a88a7d81ebcdb3ff SHA-256: 8e5c3b89b9ce09ba1969ee63896b3027765266521a4ef99bbce3108761034cf7
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that redirects to a malicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick users into visiting a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://dafemum.ru/strik?utm_term=samsung+smart+tv+bluetooth+keyboard+and+mouse
    • https://cdn.sqhk.co/tedubifo/haqvhbp/namatikikulijepajebabi.pdf
    • http://fizarumokugafu.mywebcommunity.org/31300276093.pdf
    • https://vavaxomutiposev.weebly.com/uploads/1/3/0/7/130738712/189447.pdf
    • https://cdn.sqhk.co/vizelupavew/gdihy3k/lazenaweju.pdf
    • http://ctuxuu.com/michael_talbot_holographic_universeizhdm.pdf
    • http://olivamebel.com/fufigireke0ew6y.pdf
    • https://cdn-cms.f-static.net/uploads/4422168/normal_6036c0185fe9d.pdf
    • https://cdn-cms.f-static.net/uploads/4457843/normal_602f15137018d.pdf
    • http://rolapisi.scienceontheweb.net/examples_of_alternative_assessment.pdf
    • https://cdn.sqhk.co/mepapogivoma/hihijxh/43053630683.pdf
    • https://cdn.sqhk.co/sesijisova/ijZhgih/correct_air_pressure_for_size_5_soccer_ball.pdf
    • http://sutiboju.sportsontheweb.net/61198847475.pdf
    • https://jononosafopobof.weebly.com/uploads/1/3/4/6/134649788/dbacd93f5a009f.pdf
    • https://cdn-cms.f-static.net/uploads/4496824/normal_603ddfb824580.pdf
    • http://ca-management.website/dezesojogonawabugetasey21f8.pdf
    • https://finuvowevemez.weebly.com/uploads/1/3/5/3/135397693/nefafubuso.pdf
    • https://cdn-cms.f-static.net/uploads/4426541/normal_60121a514de92.pdf
    • https://cdn.sqhk.co/tibakekavero/hjhhhas/ice_cream_cake_ideas_pinterest.pdf
    • http://kindraretterath.com/wopuxebanimivabitukomov2huwl.pdf
    • https://zanafulifefa.weebly.com/uploads/1/3/4/5/134596365/sovebos.pdf
    • https://jimiporumina.weebly.com/uploads/1/3/6/0/136088268/50084ed876ec1d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://roduteberilexel.epizy.com/html_to_laravel_5._4.pdf
    • http://xotekibibira.rf.gd/hamilton_beach_toaster_oven_4_slice_easy_reach.pdf
    • http://lavoxema.onlinewebshop.net/belajar_excel_lanjutan.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3d0.bin
35ff98dd20e960114d03c1d3feee9d93d6e8a6bed036f6515756f7a73a62a2c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D0 5544 bytes
font_01_sfnt_off00010676.bin
4e5ba1beb94b38b193146223fe0115aa5a7862b592bd4a6b87b5251b23b5a73a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10676 11284 bytes
font_02_sfnt_off00012d0f.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12D0F 4324 bytes

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