Malicious PDF — malware analysis report

Static analysis result for SHA-256 71abc7d75b3b4f7a…

MALICIOUS

PDF

64.3 KB Created: 2021-02-15 10:27:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1c8faf2f1179542bfb2726e3539d2924 SHA-1: 1cd3240becb18b27b13f9ff39872b38516a4cec7 SHA-256: 71abc7d75b3b4f7a628b9d81899518a6e7d6ee2ec8942aeb9d814d79465dfc36
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://baarspo.ru/wix?keyword=adler+orchestration+workbook+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4489407/normal_601b3612b6e6c.pdfIn PDF document text
    • http://latencfsrt.space/zanimibasodigorumamixico1lf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382972/normal_5fc5f6915bcec.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484376/normal_5fcde43068517.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445544/normal_5fe0458e8f93c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426279/normal_600c82d1d980b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366662/normal_60035ecc37ef4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424331/normal_5fd323771751e.pdfIn PDF document text
    • https://cdn.sqhk.co/rinugezig/jgherhc/comment_scanner_un_qr_code_avec_samsung_s7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501634/normal_5fd8210561ce2.pdfIn PDF document text
    • http://btsworld.org/ruvegemogizezukageki095o.pdfIn PDF document text
    • https://cdn.sqhk.co/sunalikefazo/UflhdaV/baby_yoda_backpack_gamestop.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387589/normal_5fc5e92718a05.pdfIn PDF document text
    • https://cdn.sqhk.co/bulixanejad/8xRJpBi/41032248407.pdfIn PDF document text
    • http://lg-copyrightforms.com/world_camera_live_apkwhtck.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/jolituzoji/ignou_date_sheet_2019_ba_2nd_year.pdfIn PDF document text
    • https://s3.amazonaws.com/gogunabones/pizamuweg.pdfIn PDF document text
    • https://s3.amazonaws.com/xakusineba/dezikizokabeber.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_off0000bd99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD99 5528 bytes
SHA-256: a53e745b4b5975d043e94122170b52411796d17e4e471e0b581c736d194b42a8
font_01_sfnt_off0000d06e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD06E 10484 bytes
SHA-256: e9dfdd9c62c6f7d2971d50b70b4f1ac8e32b778c58eb1d51c8d03673cd4e5179