Malicious PDF — malware analysis report

Static analysis result for SHA-256 4266524bae437930…

MALICIOUS

PDF

75.5 KB Created: 2021-01-20 03:18:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d759517dccdd10d3b2f599e819bb8d87 SHA-1: 710dc96b267a2e263e44705789bac115a6bc5a28 SHA-256: 4266524bae437930fa62d684b151c6cab1403620991ba872ddc11a7a0c7cedfc
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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://jacksth.ru/wb?keyword=doom%20patrol%20dorothy%20friends PDF link annotation
    • https://cdn.sqhk.co/vaminika/jdjj6jb/lepoxesofuzizer.pdfIn PDF document text
    • https://cdn.sqhk.co/devisojop/bjhaZhg/special_agent_dale_cooper_shirts.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368952/normal_5f8cf0761aceb.pdfIn PDF document text
    • https://cdn.sqhk.co/vumulevezuf/aiiDZPA/43596026961.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460970/normal_600761a327b87.pdfIn PDF document text
    • https://cdn.sqhk.co/xufaribo/ygjjehg/balud.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/tenunud/bogifasof.pdfIn PDF document text
    • https://s3.amazonaws.com/sebunuzu/bruce_lee_telugu_movies_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/purufiz/decisive_battles_thermopylae_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/geometric_series_calculator_infinite_sum.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/vosalojoraderepanezejuvi.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/chain_guide_bicycle_srl.pdfIn PDF document text
    • https://s3.amazonaws.com/lezerawe/bowflex_treadclimber_5500_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/guxosa/pinokubotino.pdfIn PDF document text
    • http://molodetagako.epizy.com/nadidopilalowixenom.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_off0000ea7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA7A 5384 bytes
SHA-256: b50f066fa7b292b94a6b915b5aa2e8926dc0f3ac9f4e99bced7b6d6dff70cc3b
font_01_sfnt_off0000fca9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCA9 10752 bytes
SHA-256: 5ad0560a30caa58fec041fce29109ccd5ca5fb88bec350d197c83789a4d0a1c8