Malicious PDF — malware analysis report

Static analysis result for SHA-256 73b5bd2d8c2afcba…

MALICIOUS

PDF

73.7 KB Created: 2021-01-24 16:10:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 3778f4bfcc64201cc95fbc39c4852977 SHA-1: 4725923f70ca9fb39897e63cbf455f1e7b714f5e SHA-256: 73b5bd2d8c2afcba617b5eb45ee78a14d54ef53499bb9537c448fd3b4651bec1
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/shook?utm_term=the+last+door+collector%2527+s+edition+walkthrough PDF link annotation
    • http://copyrighthelpptteam.com/hyperspin_pc_requirements_2019jb3r9.pdfIn PDF document text
    • http://iglivesupportteam.com/nupik4tiox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471690/normal_5fd99e5781e38.pdfIn PDF document text
    • https://gadudomarun.weebly.com/uploads/1/3/4/7/134705140/9328074.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387566/normal_5ff55209acbff.pdfIn PDF document text
    • http://kopumiwabetare.66ghz.com/esma_guidelines_on_aifmd_reporting_obligations.pdfIn PDF document text
    • http://debesur.iblogger.org/n_p_letter_whatsapp_status_video.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482413/normal_5fd78b84c51a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421330/normal_6009f8f39f17d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373297/normal_5ffa8b8586984.pdfIn PDF document text
    • https://cdn.sqhk.co/kafufojugure/kjajhig/27632803322.pdfIn PDF document text
    • https://pixiguva.weebly.com/uploads/1/3/2/6/132681827/84b42546d00567.pdfIn PDF document text
    • http://goldstein.capital/beyblade_burst_rivals_game_guardianiy2og.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471690/normal_5fdd1030a1973.pdfIn PDF document text
    • http://kekebum.22web.org/niseditigedopuka.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421208/normal_5ff9bc4612912.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464530/normal_5fc9cce31c91f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vukenorap.epizy.com/95378575038.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_off0000e353.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE353 5340 bytes
SHA-256: 450231669bf0b6a6e32a2412b97e75068cc315f70e741e5fc6616283317e732a
font_01_sfnt_off0000f58d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF58D 10588 bytes
SHA-256: c4e8660e1caebb5e3420be312cc08c41a03a4b8e78cf40aa06c068fdb53387d0