Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1de6d07b53eec40…

MALICIOUS

PDF

42.1 KB Created: 2020-11-01 21:38:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: bcbf10d40ca5743d6266be91763ee4f8 SHA-1: 995a1274b6821b873b6411558cc38227aa4384d0 SHA-256: f1de6d07b53eec4071293440981407f569a5381d8f2861c4667233393e4c4adb
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/aws?keyword=vr+flight+simulator+pc In PDF document text
    • https://cdn-cms.f-static.net/uploads/4386365/normal_5f9240639c655.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390381/normal_5f97b9b7b63e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376621/normal_5f915a35669bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368242/normal_5f8bad3ef31ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371814/normal_5f98c2e2bb711.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367019/normal_5f8be19456864.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373526/normal_5f9115f0e4f7d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390071/normal_5f950fe7dfb56.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449014/normal_5f9dfd9f0db42.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411919/normal_5f97666b1ec8b.pdfIn PDF document text
    • https://jonukejunuxesa.weebly.com/uploads/1/3/1/4/131409236/jodizitejup.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/1/0460/1400/5407/files/39003629833.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9813df51-77ca-46c6-b9a2-8eceb7091c8f/7163933145.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e159138-c26a-4b1d-9972-8293adc14b2e/20853292225.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_off0000671f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x671F 5396 bytes
SHA-256: 0144d49ccb2d6809312a2be8fce0dd3ecd01ddf990fe80bb888eab36da33ed5c
font_01_sfnt_off00007952.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7952 10180 bytes
SHA-256: 2447391457bb93ae4c46ea9c129398582fafc8e85f423094daca78db2e224194