Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5dd37dd3f0ce59b…

MALICIOUS

PDF

46.7 KB Created: 2020-10-29 19:27:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 5b58a03a5be3aa6d996a00f53f268179 SHA-1: c17d9ada9e36647b8e1dc24dbcc755a793466a02 SHA-256: f5dd37dd3f0ce59bcc40810aa45de604d0f28424ee85e4c2348beb485fc5e5bf
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.cc/pify?keyword=frames+of+war+judith+butler+summary In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369911/normal_5f8917feaa4cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372681/normal_5f8997d2b9b4d.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/zetare/43976749295.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/4784/3497/files/tunaxerefinopetutexitokam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67bbd612-2d7e-4022-b57c-1ed9f7b00300/wenupomomomurafow.pdfIn PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/tifixibawaxikusuze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eee05d7b-19df-415a-bb92-9169e947f63e/likokabupevikuduxolexib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d6006a5-bcc3-4c6c-8c39-36a78150df54/dasajopiwasetotude.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46992a3e-d4da-4b93-bd7b-10dd377d7472/doxife.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfd8935e-6278-4bb1-bed1-ee8ac968e936/27706584490.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/tarawer.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/zuguregazibelikupukugix.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_off000075d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75D8 5512 bytes
SHA-256: e6d18173827a2abc47d31dccf4807d3b10147ce8ba35c606420d1c28dcde4e1b
font_01_sfnt_off00008884.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8884 11080 bytes
SHA-256: 9b8f3fb45802deb5008b14ebcde2378d8a0eb2b2e05c93ab5f4d79bdd6d3896b