Malicious PDF — malware analysis report

Static analysis result for SHA-256 4762f9de266fc163…

MALICIOUS

PDF

72.9 KB Created: 2021-02-24 23:45:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f133acc0461680e9db8190118cc241b3 SHA-1: 33c1aeac644bc06aa600565307da06c63a7607d9 SHA-256: 4762f9de266fc163819efeca755c00b54929b2918911d309f5e2ae5f39cd4b70
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://baarspo.ru/award?keyword=what+is+a+good+score+for+sat+writing PDF link annotation
    • https://gizutiki.weebly.com/uploads/1/3/4/4/134478998/sewawujo-dogom-nadejebiv.pdfIn PDF document text
    • https://jetovalanowu.weebly.com/uploads/1/3/0/7/130739462/507ac0bf3906a73.pdfIn PDF document text
    • http://jonavaruxeri.22web.org/faxatezozefaligegivan.pdfIn PDF document text
    • https://kurupatasewa.weebly.com/uploads/1/3/5/9/135958836/b54bdca7a378.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379487/normal_602f82ec68d95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463532/normal_60263e2c42d50.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413697/normal_5ff5788fd4227.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449602/normal_5fddd6423fab2.pdfIn PDF document text
    • http://tekelas.iblogger.org/relaxing_instrumental_music.pdfIn PDF document text
    • http://mevazuzazoxip.22web.org/peropapokisejuguxoxolapab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445729/normal_6016795cf1b6f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dudolisimak.epizy.com/blender_2._79_1.pdfIn PDF document text
    • http://desiwafinu.epizy.com/excel_spreadsheet_template_for_business_expenses.pdfIn PDF document text
    • http://dojeranorered.epizy.com/77811555480.pdfIn PDF document text
    • http://jovadoku.epizy.com/bench_press_form_back.pdfIn PDF document text
    • http://guwivuvasexi.epizy.com/32096004063.pdfIn PDF document text
    • http://kosirokuki.epizy.com/finding_the_perimeter_of_a_semicircle_worksheet.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_off0000e0c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0C2 5356 bytes
SHA-256: 02aae4a925f425247f0a983292875fb21c1afb13f09831d7582f069cbcbecfd5
font_01_sfnt_off0000f30d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF30D 10380 bytes
SHA-256: 666d75c6e3415ebedc77bc31696d59b471a6b3db043493e731d79c5fac7b7abf