Malicious PDF — malware analysis report

Static analysis result for SHA-256 d25f003729ce841a…

MALICIOUS

PDF

66.1 KB Created: 2020-10-03 11:32:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: e404623e5caf1fb227cdcd531194d41d SHA-1: 6d074f4e43cc3a9c319b7020d08b52580dd9dfdb SHA-256: d25f003729ce841ae8463d6101acc091f711dc83064d6dcd303f30447ff644a4
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/pify?keyword=md+duel+masters+card In PDF document text
    • http://files.psylvesterpics.com/uploads/1/3/1/4/131407698/2788947.pdfIn PDF document text
    • http://files.ornamentsofexpression.com/uploads/1/3/1/4/131455883/vojosa.pdfIn PDF document text
    • http://sogotadu.mochex.com/uploads/1/3/1/3/131379246/3670150.pdfIn PDF document text
    • http://files.awalkoffaith.net/uploads/1/3/1/4/131453247/zuvuwurifegajez_xegogofa_dofinasizeretem_duferavufikeza.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0500/0108/4566/files/ups_competes_globally_with_information_technology_case_study_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7495/9000/files/kosujavo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/0115/2163/files/gojatobimurosovarup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/3977/9747/files/gepamamitomusisovedud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5172/8546/files/toxevemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/8249/2325/files/34095758485.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6577/6030/files/59105803696.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/3152/3239/files/wildlife_park_3_review.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1342/2753/files/rozodulumodiwifaliv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6540/9173/files/the_peace_of_augsburg.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b2ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2CA 4708 bytes
SHA-256: afe6cfef3b4b8d034bf6272c4fcebe12d020dd67af670c752d60accba18271f0
font_01_sfnt_off0000c2c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2C6 13572 bytes
SHA-256: e0228a59b2b270759e7704d4ce3cc8c1b96d6bac7bdb960449cba8eab5fa7c72
font_02_sfnt_off0000ed9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED9D 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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