Malicious PDF — malware analysis report

Static analysis result for SHA-256 7072bb53dde657c0…

MALICIOUS

PDF

42.6 KB Created: 2020-11-01 15:06:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 79b7d07cb8c855f258f2a60003fef812 SHA-1: 12bece8153d3eea8829080f69226070088cd095d SHA-256: 7072bb53dde657c00c2a65534e34af85268f8bc7753efd7cc94da6080bedb59a
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://ttraff.me/123?keyword=moviebox+pro+apk+pc In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369173/normal_5f9e50ea6f89d.pdfIn PDF document text
    • https://finiluxexolije.weebly.com/uploads/1/3/1/8/131856594/4981335.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375509/normal_5f8cea30e041e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384160/normal_5f9cd498211d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368951/normal_5f87d8dbeab3b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402504/normal_5f988aab118f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369493/normal_5f8b403f9c160.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365620/normal_5f91984d53e71.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368741/normal_5f88083edff02.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371247/normal_5f93e8a3df072.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378382/normal_5f8c8862b0d0e.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/1/0500/8742/8257/files/ration_card_form_odisha.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_off000065db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65DB 5056 bytes
SHA-256: b37cfadd4a0ceff3f3cdcc8358afaabe79798a3ebad2bde8b85b6962b3f76844
font_01_sfnt_off0000772e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x772E 11424 bytes
SHA-256: 8109103280c1c76c6937207a4c5ae9487407c65f12df3c73e85cb83ec767121b