Malicious PDF — malware analysis report

Static analysis result for SHA-256 16eb3b9570ec1250…

MALICIOUS

PDF

35.6 KB Created: 2020-09-30 05:15:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 949c37c749ac683b80c1cdee4b951939 SHA-1: 2cb396de61dff4e33d7191f0a0913e9d3cf5ddb7 SHA-256: 16eb3b9570ec125013754bf3e60cd7efecfe62e0e66dc77812eb615404f988d5
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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.
  • 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.
  • 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/strik?keyword=marketing+strategy+of+coca+cola+and+pepsi+pdf In PDF document text
    • http://pojazumoz.zumbiniplay.com/uploads/1/3/0/9/130969352/xemigobug-fopexin-rezad.pdfIn PDF document text
    • http://files.valentineorthotics.com/uploads/1/3/2/7/132710676/semib_bikuzibuduvabos_laxas_butiz.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/1/0430/8546/3713/files/elasticidad_ingreso_de_la_demanda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5366/2876/files/rodajofugipu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6705/6028/files/instagram_carousel_template_psd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1380/5992/files/25466722866.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4949/9289/files/xezakuzugewagokemow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c759db53-d7a2-448c-95a5-f453e82e5778/nemorona.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91cd0aa5-1d8e-471d-9ec3-8c1157563aec/zudulodawokug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6443/5612/files/vinen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/5651/4460/files/9032096205.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7311/9143/files/42730856494.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2473/0277/files/puzivetedilu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2100/9053/files/kalender_oktober_2020.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61C9 5492 bytes
SHA-256: 9a1b7344b19d79468cd63bcecf32f96a2a06aee4d0093163a8db372b2dbc38f6