Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad5e7539b3f599ab…

MALICIOUS

PDF

73.6 KB Created: 2021-02-16 01:38:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: b79914b2e83175c785b19f62ee49870b SHA-1: 2f80108960ef6d05b343d93869131be0714e563c SHA-256: ad5e7539b3f599ab46568e57e848dde0764e2d4c26d80192a55ec954c6e77539
136 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
  • 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/wix?keyword=yugioh+pro+mod+apk PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4409403/normal_600d3d2be06a1.pdfIn PDF document text
    • http://raisinslabs.club/ac_market_version2irme.pdfIn PDF document text
    • https://cdn.sqhk.co/govuzupikiwe/Difieij/98082348637.pdfIn PDF document text
    • https://cdn.sqhk.co/pulafefer/ibRHdhe/95532692727.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457586/normal_6026cd08972c0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471455/normal_5ff5ff435491e.pdfIn PDF document text
    • https://cdn.sqhk.co/sojowidaz/Che8zgh/wipure.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503214/normal_5fcf2eafd64a8.pdfIn PDF document text
    • https://cdn.sqhk.co/kagalitisup/CCgflKk/basketball_stars_of_america.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367289/normal_5fe4c72742f1b.pdfIn PDF document text
    • https://cdn.sqhk.co/jigavozef/giPxUhc/beyblade_burst_app_mod_apk_rexdl.pdfIn PDF document text
    • https://cdn.sqhk.co/woteruzid/CIHgchd/rally_racer_dirt_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/dubikureta/LMTZdgc/97923651618.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/pibabopuduj/standard_a_formica_calacatta_marble_laminate.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/converting_between_fractions_and_decimals_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_off0000dcc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCC0 5188 bytes
SHA-256: 2e67dc3c88a2acc43bc975658824fff23237eb6836fefb5953b38c85fe0277da
font_01_sfnt_off0000ee3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE3F 13908 bytes
SHA-256: e991e2afe5d162be7b92334edc7750fffecbba521f49d1115b2c1c904ded86f6