Malicious PDF — malware analysis report

Static analysis result for SHA-256 81cc64be3fd5d638…

MALICIOUS

PDF

72.4 KB Created: 2021-02-23 06:49:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 693a28bd154af577a6114387b953a307 SHA-1: 3243d57493116e52a43f014ad33a146d4d732814 SHA-256: 81cc64be3fd5d638012132948d3be548ed3c633fbb914286a0eaab302be82f55
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/wix?keyword=lean+six+sigma+%2526+minitab+book+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4369306/normal_5fe0da985d0f7.pdfIn PDF document text
    • http://musc-media.xyz/41225668733eetdo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496592/normal_60225d4e18910.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496828/normal_600aabb7d0daa.pdfIn PDF document text
    • http://flash-sar.online/21906607075x6dt7.pdfIn PDF document text
    • http://lnstagramcopyrightcenter.com/77349208265ag99.pdfIn PDF document text
    • http://fastcreditreport.info/avengers_logo_fonta31l8.pdfIn PDF document text
    • http://jnatural.space/7759201077883j69.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501660/normal_5fed352b44f53.pdfIn PDF document text
    • http://my-favshop.online/15247126623a3tfq.pdfIn PDF document text
    • http://topstudy.fun/3827333132715t38.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/wufujudisu/49601818208.pdfIn PDF document text
    • http://dodarululi.epizy.com/blank_goalie_mask_template.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/43687642653.pdfIn PDF document text
    • http://xosekipile.rf.gd/1080p_video_website_list.pdfIn PDF document text
    • https://s3.amazonaws.com/fuvidokibet/bittorrent_app_free.pdfIn PDF document text
    • http://ripapekum.epizy.com/energy_problems_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_off0000e0a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0A6 4884 bytes
SHA-256: bb2f7436ebef4f412b06ea829408045d3432ac45788bb542284c7608433c9dff
font_01_sfnt_off0000f142.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF142 10640 bytes
SHA-256: 6adc405887c34ecc580264646b7095ac705c426fd45a6188ea088a697524c9d9