Malicious PDF — malware analysis report

Static analysis result for SHA-256 b504d0dda9591347…

MALICIOUS

PDF

39.3 KB Created: 2020-11-01 09:27:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 1ed62acef7f112462c64186659922e06 SHA-1: 55dd56c768f24bf222b0134de320596ccfa90699 SHA-256: b504d0dda9591347d22c01713f9d3b1c1722599d737eff3c453819aee4391d76
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=christ+hospital+chicago+emergency+room In PDF document text
    • https://cdn-cms.f-static.net/uploads/4421627/normal_5f9780a006b1a.pdfIn PDF document text
    • https://porelananov.weebly.com/uploads/1/3/0/7/130775759/mejisasemexa_mexidixuxoguri_pomadito.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383451/normal_5f9e60d92f9c0.pdfIn PDF document text
    • https://xuwuperozaposa.weebly.com/uploads/1/3/2/3/132303395/bamow-nepuzasadumof-momexixabudomef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375076/normal_5f8fa73e4f6bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366321/normal_5f875153b1320.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383573/normal_5f8fdd788b7b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369333/normal_5f89eebb0ea81.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/wonoti/menalulov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/5410/3203/files/fugifigiti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/2090/9207/files/79439755638.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3865/3086/files/ark_survival_evolved_valguero_map_release_date_xbox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/6050/0926/files/adverbs_of_frequency_worksheets_for_grade_6.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0507/2450/3744/files/37342013267.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_off00005dcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DCC 5352 bytes
SHA-256: 0444a5f256fdaa13bcb186b53cf07ecf09a92c6070cf0cf1ece507cdffcdbfde
font_01_sfnt_off00006fd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD0 9592 bytes
SHA-256: 5665b6527117a33ee37364682941721b9cba7ff4e261efcad7104ca97c63145c

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