Malicious PDF — malware analysis report

Static analysis result for SHA-256 c25f0227244bee16…

MALICIOUS

PDF

69.4 KB Created: 2021-01-23 08:58:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 03a8c91e98856ca85f81d05cb2e23d88 SHA-1: 2e34b0845c8fd78145727f4df999f31a2d45b0c5 SHA-256: c25f0227244bee16d371b44781519a9e48c18cef27506ec5d2a4fed456fb4aeb
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/123?utm_term=seatgeek+tickets+refund PDF link annotation
    • https://cdn.sqhk.co/sadebupunen/b4qJjjt/disney_ticket_scanner.pdfIn PDF document text
    • https://cdn.sqhk.co/madagijoj/ggia5Xh/54425243458.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488804/normal_5ffcfacacb846.pdfIn PDF document text
    • https://cdn.sqhk.co/nejajevafode/j5ihyib/diamond_rush_temple_adventure_stage_1_level_7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484807/normal_5fd7719269117.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470226/normal_5fd88ab252a4a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386837/normal_5fe3d6631a3a6.pdfIn PDF document text
    • https://cdn.sqhk.co/xidujefonari/7Hgchh5/99054538370.pdfIn PDF document text
    • https://cdn.sqhk.co/jogujufuza/fLhjKid/dell_kb216p_keyboard_driver.pdfIn PDF document text
    • https://cdn.sqhk.co/dudugetogi/67DajbR/modern_mania_wrestling_tips.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416923/normal_6001675c531e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447265/normal_600aa09e8be16.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419218/normal_5fed771fedbc8.pdfIn PDF document text
    • https://cdn.sqhk.co/motuwezelu/l33zii8/24822835520.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/xupovobejanam/91175547242.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_off0000d372.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD372 5324 bytes
SHA-256: 0e13e14511263631b29f445e92833deab8a0034a8da2e5a1dbc68a143a667ac3
font_01_sfnt_off0000e5a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5A2 10684 bytes
SHA-256: 662c5e0f20773dbd075e22d647720f4f45d53ad8b50bdbcb8f668f9b2b3731cf