Malicious PDF — malware analysis report

Static analysis result for SHA-256 2913e6da487e131f…

MALICIOUS

PDF

86.8 KB Created: 2021-02-01 05:56:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: c609c2c05499fb89377bd518e2455cd8 SHA-1: 4fae47f90be1ba6d49107e223992fbe77ec6756d SHA-256: 2913e6da487e131f4f3f89c0ae8a53be2b4e1c83de0124b8c36ba37f4f627e0b
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://leonvi.ru/wb?keyword=the%20most%20scariest%20horror%20game%20ever PDF link annotation
    • https://cdn.sqhk.co/vakusukereju/Bigo015/gunner_olszewski_punt_return_stats.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490251/normal_5fd886ecb6d54.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464302/normal_5fcdbc8ad1366.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367687/normal_601733e4a51c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481272/normal_60177a8c14421.pdfIn PDF document text
    • https://cdn.sqhk.co/mekaxosur/a2idZgf/ludo_game_ludo_2020_star_game.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387815/normal_5ffb096414b41.pdfIn PDF document text
    • https://cdn.sqhk.co/damukowabij/jdiedsR/offroad_bike_racing_game_download_uptodown.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/lekizopiloref/34572447171.pdfIn PDF document text
    • http://fekerudosepu.rf.gd/logamivadaxovisobemufido.pdfIn PDF document text
    • https://s3.amazonaws.com/dowesitobuga/nutozeg.pdfIn PDF document text
    • https://s3.amazonaws.com/nilititonawafim/badaga_latest_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/vosimalume/ziromajitozimalekaxi.pdfIn PDF document text
    • http://zapofekeba.rf.gd/guitar_beginner_sheet_music.pdfIn PDF document text
    • http://pekagotikoweguf.epizy.com/39754179041.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_off00011834.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11834 5192 bytes
SHA-256: 727555eca92a53d8ebc378e79444eb29d1f0428d95786a579d35db8f3eef94b7
font_01_sfnt_off000129ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129BA 10760 bytes
SHA-256: 398353c544591c306ce0464e3158558290a078be120e93ee5687a02f3529eb4b