Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ee73bdbfd48ce87…

MALICIOUS

PDF

43.3 KB Created: 2020-11-01 14:17:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: cf2e791e05f3becde7f9e1d012798272 SHA-1: f27e1dde0c2165927b9be1a124fe36f228dbf43c SHA-256: 8ee73bdbfd48ce87e510cc20ce8ae9831ec69a52d7a7357eb000cdf60d0dcc2e
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.me/123?keyword=band+of+horses+the+funeral+live In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368227/normal_5f8a40461e7bb.pdfIn PDF document text
    • https://bizumoku.weebly.com/uploads/1/3/2/6/132681494/4ab11da3e93a.pdfIn PDF document text
    • https://fuparududewon.weebly.com/uploads/1/3/1/8/131856041/jubumirigop_genijijuris_wasezele.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393502/normal_5f9267f4adaa3.pdfIn PDF document text
    • https://roninuvanajeg.weebly.com/uploads/1/3/1/3/131379749/povurixu-nenilizu-lixegat-kufuxuwuri.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369486/normal_5f8ed360baeef.pdfIn PDF document text
    • https://botubadixebom.weebly.com/uploads/1/3/1/4/131407995/mipenoreka.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/dd5bda6d-a3b6-483c-9662-3500f47fd883/felabetijawuxaka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/4663/4150/files/addi_knitting_machine_patterns.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9016/8987/files/57615715694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/4824/6692/files/s_walter_packaging.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5f1d2d0-e5c3-466a-b4e6-530cf07516a5/le_cerf_et_le_chien.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005daa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DAA 4984 bytes
SHA-256: 7fa28d599933c4c240aa8348cf70c1570c881957f7d4d59324a9a2edb468ce9c
font_01_sfnt_off00006e95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E95 10508 bytes
SHA-256: bd280d10a582630367d56662f5d0afb4eeee002ac122bad419d30360504d509b
font_02_sfnt_off00009276.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9276 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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