Malicious PDF — malware analysis report

Static analysis result for SHA-256 93abcc1a7c686f8c…

MALICIOUS

PDF

45.2 KB Created: 2020-11-01 01:45:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 95762c0d939e378e3a492cd78ad9d760 SHA-1: 9e9329ddad569a5779c118337ecd845f52fb09be SHA-256: 93abcc1a7c686f8ca30786e5ea4a98e90cf510b832633223b8ff24d3d1ee9d19
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.link/pify?keyword=spatial+processing+brain In PDF document text
    • https://korodaziso.weebly.com/uploads/1/3/0/7/130740443/3405673.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427514/normal_5f987cf19724e.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007182.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007182.bin)
    • https://uploads.strikinglycdn.com/files/04034fe6-32d2-42d3-862b-5bc76119e37d/disney_the_swap_movie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5955/9065/files/basic_architectural_design.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/1979/2294/files/kasedonobuxarikedamuwoma.pdfIn PDF document text
    • https://s3.amazonaws.com/tojabixefova/business_development_officer_resume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2779/1009/files/worijuzajuvibibogegimej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8661/7007/files/wozoxi.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/biology_book_download_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jiguwuzobozobaz/xinepavogiwajejuruvoza.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_off00007182.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007182.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7182 5344 bytes
SHA-256: 9032b433221000ef069e89c6896ac3971467f9270357c6f6b698521875af7e32
font_01_sfnt_off000083b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83B3 10912 bytes
SHA-256: 3f4e78e183fbbcdcbf307d673ab5fbbbcc0eb6383175b2192cf2d7db6c4343ac