Malicious PDF — malware analysis report

Static analysis result for SHA-256 cea8b88de789d33c…

MALICIOUS

PDF

42.2 KB Created: 2020-11-03 07:53:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 326250fca70518867e1ddd4c7c8c5045 SHA-1: 8537e67eb10a5c54cda30f486d820eed138567bd SHA-256: cea8b88de789d33cd94ca530361d99c0e4c8670201fe442a148a20cc411861fe
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://ggtraff.ru/wb?keyword=pourquoi%20travailler%20dans%20un%20magasin In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367299/normal_5f9e6ef2e3e58.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368772/normal_5f91e9fb854b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366022/normal_5f8741a80be33.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370989/normal_5f9aacdcbe8fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367645/normal_5f887d856aa50.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385231/normal_5f91c2c69f0e4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wilugugo/10230185933.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1795081d-a413-42c0-9e39-48e3a3fe5db0/zesojavofur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6901b3c-8660-4d0f-909b-abcbba362e21/galewaxepikifevo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56f338c5-5f8b-413d-9f80-94296873ecdb/11485581944.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0468/8606/0189/files/98457191747.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/9525/2899/files/youngboy_still_flexin_still_steppin_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4956/6886/files/53630375173.pdfIn PDF document text
    • https://s3.amazonaws.com/jupevuxirapi/pharmanex_ageloc_youth_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6984f6cf-64e3-4c92-82ab-eef635c1b8c3/26329241062.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78eee8b5-9a6a-40cf-9b3e-8b95e7becd41/sisom.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

Related samples 5

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_off00006360.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6360 5332 bytes
SHA-256: 65e5f89e4b3a665209382960e0f389cca9dd81db5c8fe23c52758c6848def89f
font_01_sfnt_off00007569.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7569 11700 bytes
SHA-256: aa479ffa0620192da6c42452ab34860d0f171d6416166008196e46e20b4847c5

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