Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b2267b482318f12…

MALICIOUS

PDF

41.9 KB Created: 2020-11-09 02:51:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 85de127a6769e8869c406c8cbfb8298c SHA-1: f6f18933890e173afb4a43eca0a6ffaa58a88460 SHA-256: 5b2267b482318f121d2124c9b239e05a94701dd1ff44543888ce3ae0bd907303
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://trafftec.ru/aws?keyword=sesshomaru+and+kagome+fanfiction+lemon PDF link annotation
    • https://lebidupevi.weebly.com/uploads/1/3/4/3/134319251/sapujafinigi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483591/normal_5fa72cbd52dec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373527/normal_5f9d9bd95aa4d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380692/normal_5f98c6fd6cd82.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450890/normal_5fa2c09eda097.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384316/normal_5f8dc5d5319bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403540/normal_5f9180b1005c5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e15e1c96-7f71-4894-b952-cce93e0f33cc/vasaledukiwunasakudivapo.pdfIn PDF document text
    • https://fepenowiridu.files.wordpress.com/2020/11/niloguluderibelopewoduf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64ddd4f4-992d-4dea-a4f9-2b0643f613e2/armored_core_for_answer_white_glint.pdfIn PDF document text
    • https://xixojis.files.wordpress.com/2020/11/zerilelefejejak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3783cd9d-1863-4bd0-86ec-c43eba88aacc/gifarinuba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2dbfa6aa-05e6-487d-9731-0048f96a4529/70003390686.pdfIn PDF document text
    • https://s3.amazonaws.com/bovenotojitowe/27579180234.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_off00006564.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6564 5600 bytes
SHA-256: 524ac529f4e6983f2edf5da6bb9b60d0600f7520e40a392dc4b616c76b49716b
font_01_sfnt_off00007842.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7842 10100 bytes
SHA-256: f9a04c38dce0615ab4cc1d731be41257238fbe072ffb72bf11766d37bf6e8b3f