Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9cbe85a0106c8e4…

MALICIOUS

PDF

52.8 KB Created: 2020-08-08 05:34:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: aea07141ca98ea4a66e59af5b9c6bc0b SHA-1: b908351fd061f1245e22f9651acceb238d83f0eb SHA-256: f9cbe85a0106c8e4828f72758740825c2bf9f6951b6bfc2ece4ece333a8337b0
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.ru/pify?keyword=aceites+esenciales+pranarom+pdf In PDF document text
    • http://files.tcmattsandsons.com/uploads/1/3/1/3/131384492/monixanibel-jenexurewujep-ninonawuj.pdfIn PDF document text
    • http://lotezujir.wanderlustfarmskc.com/uploads/1/3/1/6/131607131/6961182.pdfIn PDF document text
    • http://lavozebok.aspiringveganista.com/uploads/1/3/1/0/131069839/d5e8992f.pdfIn PDF document text
    • http://nupewemef.jacksonchapelumc.org/uploads/1/3/2/6/132681513/rudirekawupajivemeti.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/1/0435/4729/5898/files/mk_dc_universe_fatalities_ps3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3123/1637/files/java_repeat_string.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9209/8726/files/berliner_platz_b1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7543/6705/files/12797582767.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4251/2797/files/35271505280.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3680/3233/files/augusto_cury_voc__insubstituvel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2749/5072/files/11245866111.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/8535/3380/files/english_phonetics_and_phonology_second_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2562/0374/files/84597522975.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7410/1160/files/76383354760.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

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008d00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D00 5288 bytes
SHA-256: 5f2758f5a19fc55c2a05d23707616a0a2938dcd42579737e3fc2b52d9de085cc
font_01_sfnt_off00009eea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9EEA 12100 bytes
SHA-256: 3cd85cafe04a7ab1cb8ba1b1d0dae3713bbc5a630b805b7e60a9c9a04a93bf67

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