Malicious PDF — malware analysis report

Static analysis result for SHA-256 209bbf714f1d36e8…

MALICIOUS

PDF

43.0 KB Created: 2020-11-06 11:57:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: a9827a735d265758b3ef7538cf2b830c SHA-1: f803331d540a466000890535fffb6efc5bf12ab5 SHA-256: 209bbf714f1d36e8b1d2a3b9832fbc69dd7490bd348b4c200a74bca1d99393fe
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/123?keyword=bald+mountain+moccasins PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375699/normal_5f8e41779b52f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367300/normal_5f87609b4f471.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369509/normal_5fa4f4098487a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387826/normal_5f9f9bc6eb0b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411480/normal_5f9f2c1b501d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368979/normal_5fa3a5e6603d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421630/normal_5fa1f142b156e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378853/normal_5fa1b99ee66a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386591/normal_5fa45803d6082.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369512/normal_5f8c46ffeb5e2.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/3ee31e05-02f2-475e-9642-e1c797758bcb/3041189131.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da081d94-249d-4937-a866-98d9e2f9d138/44403603070.pdfIn PDF document text
    • https://s3.amazonaws.com/dapekufoxiraku/nunowevaditus.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/shawnee_mission_northwest_high.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_off0000670f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x670F 5040 bytes
SHA-256: 3e3d282f8d7a827ac31d0c7b95f7cc44dfdd3af43ef78fca1cbeb53efabc93b5
font_01_sfnt_off0000781e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x781E 11408 bytes
SHA-256: 88f22985bbce5e4f25e4b061c81c29c86762eeb730762264fc661e937e323f06