Malicious PDF — malware analysis report

Static analysis result for SHA-256 0311415b5e3e8769…

MALICIOUS

PDF

39.6 KB Created: 2020-10-13 14:30:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: ccb39da3ec304115b8a32378dafda452 SHA-1: 610a5076ecaad489af05adef910f16b073bd8f08 SHA-256: 0311415b5e3e876973dad3f5f656cf92788576cd03132861d5f12c3d5abbad00
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://ggtraff.ru/strik?keyword=anyapk+redeem+code+free+fire In PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/gosibokuvefuj.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/rebodi.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/aa94aa7f99c.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/a8401ec7a9859.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/pejajofedaxevaw_kozadesupuke.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/07c4d3e7-4f64-46e6-a115-eea8eb4545df/83665836983.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97a2ac22-9957-4c68-9fea-b6989fb04d0c/34522130836.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4703493-79e2-40b0-afd5-034fccb4461b/562494458.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfc0f7b9-cd26-4650-864d-3a69681a6907/27935860962.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/411fef76-34cf-4a9b-b05b-5cd0208d73e0/jaxininikinururusati.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_off00005cb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB3 5244 bytes
SHA-256: 9ae7875c20a676624f14b9cb7f8798a25ba658d7d32b43c910d5ccd1b486c951
font_01_sfnt_off00006e74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E74 10384 bytes
SHA-256: add652e7e3e162de151af1e6c605e7357a08aae88f9ed6ac82f7d46fbb1c8aa9