Malicious PDF — malware analysis report

Static analysis result for SHA-256 1055f5087d823603…

MALICIOUS

PDF

69.3 KB Created: 2021-02-25 04:20:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5a8f0813fbad8d20616e5572cca4cfbc SHA-1: c0f45b7dc78282012f84b6fec1847786aeb9da79 SHA-256: 1055f5087d823603f779f18ccdac37f49bbb9028143a5fbe7c8cbe06cd50b9e8
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://druttle.ru/wix?keyword=kuta+software+infinite+geometry+spheres+worksheet+answers PDF link annotation
    • http://xoxuvajes.mywebcommunity.org/las_mujeres_que_aman_demasiado_resumen.pdfIn PDF document text
    • http://tapozifokun.mywebcommunity.org/are_disney_world_fireworks_cancelled.pdfIn PDF document text
    • http://lizoguxumugef.mywebcommunity.org/eureka_forbes_vacuum_cleaner_service_centre_in_coimbatore.pdfIn PDF document text
    • http://akb54.ru/nimusixekexu4b3.pdfIn PDF document text
    • http://gatowixipeba.mywebcommunity.org/kx-tg7875s_user_manual.pdfIn PDF document text
    • http://sugameloxufe.mywebcommunity.org/acura_maintenance_code_a13.pdfIn PDF document text
    • http://raisinshub.pro/pre_kindergarten_worksheets_free_downloadbqr6d.pdfIn PDF document text
    • http://harmony-market.ru/ziroponuwalavo2f0qn.pdfIn PDF document text
    • http://likedizar.medianewsonline.com/lalawewux.pdfIn PDF document text
    • http://rozujed.sportsontheweb.net/giwokuvuka.pdfIn PDF document text
    • http://lulopoboxefon.scienceontheweb.net/91021894426.pdfIn PDF document text
    • https://vobudofokivelux.weebly.com/uploads/1/3/4/5/134599261/519581.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/julexekubaj/google_docs_google_spreadsheets.pdfIn PDF document text
    • https://s3.amazonaws.com/nakuzafol/75523138269.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxuxemu/thermal_decomposition_of_sodium_bicarbonate_lab_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/woxotopapozokev/rekugoxevezuwowesit.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_off0000d405.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD405 5508 bytes
SHA-256: 149a5baec66dcbafd018d377125c7eb4fc41aea206a72c827a02ebf818287491
font_01_sfnt_off0000e6bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6BB 9724 bytes
SHA-256: 78704786f390843c2f89473687691c4180f327b62a29bb11cfee0a3266039cec