Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b9d8c7cec99e4e0…

MALICIOUS

PDF

42.7 KB Created: 2020-11-08 11:40:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-02
MD5: 7c9db757b88dffa62f41dc99c70de563 SHA-1: c5b790fa24b2f334f20f65f79c4f45ad14df0174 SHA-256: 5b9d8c7cec99e4e045f7d4f7fd552e9d462128acce0f6b6b1586779952bf3154
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://traffset.ru/aws?keyword=xbox+360+wireless+controller+user+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4390328/normal_5f9b7f9ad9f92.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366668/normal_5f8d0acda51f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381978/normal_5f99b8d7c7b39.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000066b3.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000066b3.bin)
    • https://uploads.strikinglycdn.com/files/f4ca5b40-394f-4648-bd76-ea5461a114f8/wutisikomolozabaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42825fa4-65dc-4de2-9f00-b4a203e053f0/the_cambridge_companion_to_milton.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a531376-1aac-4a8b-b997-5a10413922c0/dosadatav.pdfIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/binugu.pdfIn PDF document text
    • https://netadoliwobo.files.wordpress.com/2020/11/behaviourism_and_mentalism.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e88a997c-60ef-4d59-81c0-14c8b4d32a27/94789881081.pdfIn PDF document text
    • https://s3.amazonaws.com/giwurode/4863248210.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3bc8698-a121-413f-9161-51d7a6f6e4d7/fewarejetevo.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 extracted file (font_00_sfnt_off000066b3.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66B3 5684 bytes
SHA-256: 3817e10669068c56bf39aeadc0d0a3b5c5b01fb51fa661083915d15afbe7398f
font_01_sfnt_off00007a04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A04 10700 bytes
SHA-256: 913dc049a257778341da0e04e6b8567856786d6f5cdc586b381d1c67273bf4a6