Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0229d7d30b7398c…

MALICIOUS

PDF

42.8 KB Created: 2020-11-05 17:44:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 552afe528317de29daab520f5a55fd1e SHA-1: 9d43e710bf344dcbd32fbf9dfcd21b0c8573303c SHA-256: b0229d7d30b7398ca8c4088619b7c34ff2fb87e6dce27d9fc7f2e10702ebf2f4
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://traffking.ru/strik?keyword=bill+of+sale+for+camper+trailer+in+georgia In PDF document text
    • https://cdn-cms.f-static.net/uploads/4375698/normal_5f89b81393587.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365575/normal_5f87099ad4f4c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372753/normal_5fa02147f38ed.pdfIn PDF document text
    • https://dodimugu.weebly.com/uploads/1/3/4/4/134483739/ranorepav.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/vinivuxo/21728168553.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb740260-bb27-4aed-a1c1-d93cbf748539/rulezivamifijefege.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/critical_theory_and_postmodernism_approaches_to_organizational_studies.pdfIn PDF document text
    • https://s3.amazonaws.com/roxawo/atlas_copco_screw_compressor_catalogue.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/kilevoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/219cdc8d-ace5-4b65-b1d4-3d8b21d14b94/54311390049.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/wudelugutatufovimudiwigol.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_off00006984.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6984 5384 bytes
SHA-256: 910133ca1be8a95dfa4100c12a7fa6e14a82503caee5930c161890eb3547972c
font_01_sfnt_off00007bc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BC3 9636 bytes
SHA-256: cf08aae445610753fbd23a2adabe91ddff668e230098d909e8996ed1d518cc48