Malicious PDF — malware analysis report

Static analysis result for SHA-256 26eed0e47eef9f12…

MALICIOUS

PDF

43.7 KB Created: 2020-10-20 17:41:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 0694440d7df57bed608591916b7dab7e SHA-1: 48b46a0abc8dffc7e435ece10eefcc0033d15022 SHA-256: 26eed0e47eef9f1214c1d71ab96b0e1c2e53b5f6d607b747e0754fbf17824168
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://ggtraff.ru/strik?keyword=%25D0%25B3%25D0%25B4%25D0%25B7+7+%25D0%25BA%25D0%25BB%25D0%25B0%25D1%2581+%25D0%25B1%25D1%2596%25D0%25BE%25D0%25BB%25D0%25BE%25D0%25B3%25D1%2596%25D1%258F+%25D1%2580%25D0%25BE%25D0%25B1%25D0%25BE%25D1%2587%25D0%25B8%25D0%25B9+%25D0%25B7%25D0%25BE%25D1%2588%25D0%25B8%25D1%2582+%25D1%2581%25D0%25BE In PDF document text
    • https://kutenamig.weebly.com/uploads/1/3/0/7/130740069/966a9b.pdfIn PDF document text
    • https://kokubexajaluk.weebly.com/uploads/1/3/2/6/132681668/pikerepevikiwi_duxokobaguru_tafaseworedagov.pdfIn PDF document text
    • https://besiwalufeg.weebly.com/uploads/1/3/2/6/132696214/firavokodapobi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379982/normal_5f8c62a4b2c2a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371553/normal_5f8b1e820506f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369926/normal_5f8a686b2a17e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366340/normal_5f871508e9b7c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366347/normal_5f88679f1f632.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366343/normal_5f888b90941be.pdfIn PDF document text
    • https://ggtraff.ru/strik?keyword=%25D0%25B3%25D0%25B4%25D0%25B7+7+%25D0%25BA%25D0%25BB%25D0%25B0%25D1%2581+%25D0%25B1%25D1%2596%25D0%25BE%25D0%25BB%25D0%25BE%25D0%25B3%25D1%2596%25D1%258F+%25D1%2580%25D0%25BE%25D0%25B1%25D0%25BE%25D1%2587%25D0%25B8%25D0%25B9+%25D0%25B7%25D0%25BE%25D1%2588%25D0%25B8%In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tadovu/fevizerurojidasitu.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/wokil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aebc504a-b979-472b-86f7-350adaa14f34/kebuso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1abb7739-864f-47e8-82a7-3f8808d32894/sprinter_rv_conversion_sourcebook_amazon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb4d4a9d-4d3c-45e7-b80a-4fafe41330bf/pasovinobetokojujudibudi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1f8d7f8-14d2-4e17-9005-57ca2405ba14/virimeg.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_off00005af1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AF1 5924 bytes
SHA-256: adf186d3ddd34508cb5f0c97b913e5f96655bba1b994da8046e364804c0917b8
font_01_sfnt_off00006ed2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ED2 15652 bytes
SHA-256: bcd6f4c2d373d8d804cb811e01aee616612842a7f7372707aab86c30206bab4d