Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9559c4f48d76a16…

MALICIOUS

PDF

40.1 KB Created: 2020-10-30 00:13:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 85c81e1ac607206f195b0082b6147a1d SHA-1: 8e5bd06e5475229c5588838fd44c54e86358c68f SHA-256: c9559c4f48d76a1630fb93bedd5faad4eb79928ad6ddc74efb0473f2edf3a5ca
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://cctraff.ru/aws?keyword=vote+no+on+all+amendments+nc+yard+sign In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366024/normal_5f86f66d5652a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365582/normal_5f87219db74c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366018/normal_5f86f82a6bac2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409122/normal_5f96c8955aaee.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005e40.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005e40.bin)
    • https://s3.amazonaws.com/wanasuvedigo/86149538781.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5795/4464/files/fake_gps_location_spoofer_pro_apk_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/3829/3159/files/23238392681.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5527cf9-420a-4879-a944-98fcaca12672/gizuroxekedebufigikorolo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11ea676e-d641-40f0-8f72-7a073e53668a/49163092388.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b87cb858-1069-4c32-be34-af2e8b5138ba/70440774279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/2907/6419/files/ford_transit_2020_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/bufomezogofarisafin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d9c1956-ec0a-423c-a3b9-8d9a5cf5b889/88237601298.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_off00005e40.bin)

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E40 5324 bytes
SHA-256: e16a570a743c78cbb6ac9f466ddbbf62c7f848c3c85ee1cb4c9b890feb1f52a1
font_01_sfnt_off0000704c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x704C 10376 bytes
SHA-256: 0305aee25a8dbb5d340675e82269b3208954be4f69ff2c3436974eb275ab7fc9

Open this report in the interactive analyzer, or submit your own file for analysis.