Malicious PDF — malware analysis report

Static analysis result for SHA-256 305f32452eea094d…

MALICIOUS

PDF

48.2 KB Created: 2020-11-02 08:22:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 7de0542119cc7f041e28e8e180519ed7 SHA-1: 08743d84b494743ef94be6dd06d90eff3fa68016 SHA-256: 305f32452eea094d59f6a09b1425c97a8cd8bd3bd04f5fbfa1429cc8f7b55855
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/123?keyword=gw2+huntsman+leveling+guide+400-500 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4408701/normal_5f9d4da4d9ba1.pdfIn PDF document text
    • https://ruxibero.weebly.com/uploads/1/3/4/4/134403554/jixesiguwawulekiru.pdfIn PDF document text
    • https://durewisopugus.weebly.com/uploads/1/3/4/3/134369166/6004641.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382187/normal_5f9038cd6651f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375886/normal_5f9cbb3525aa9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366655/normal_5f8d4b475f1b5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/1239/7507/files/69281229712.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4204/6103/files/tugakegew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/5957/5482/files/forize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/2606/1761/files/the_complete_photo_guide_to_cake_decorating_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0655/7860/files/35841422282.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/7142/2631/files/management_contract_asc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3445/1874/files/my_mothers_cousins_daughter_is_my.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_off00007af8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF8 5844 bytes
SHA-256: 6b312b908c12d544b0890b7c5335e0f9d3e70b1cfba1b4b4dcea09a590aa6d86
font_01_sfnt_off00008ee4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EE4 11304 bytes
SHA-256: 311245b2c86a2f5815ac81ac84d78d08fe8a833444f137765fc6545eb141547d