Malicious PDF — malware analysis report

Static analysis result for SHA-256 1927f185ce3719a3…

MALICIOUS

PDF

52.8 KB Created: 2020-07-24 00:32:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6974c05409205f4e008c933a91bd5b55 SHA-1: 2e1443f09ac28138c88a8bfc7db944f9ad4883c6 SHA-256: 1927f185ce3719a3ab28405184a73ad17ab59d3ce484cf17600cdf8cdb8ca185
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.com/pify?keyword=logan+lucky+rating+parents+guide In PDF document text
    • http://files.elementandvibe.com/uploads/1/3/1/8/131871852/df301f.pdfIn PDF document text
    • http://files.brushmountainmedia.com/uploads/1/3/0/7/130738719/fc7113a.pdfIn PDF document text
    • http://files.awatmensfellowship.com/uploads/1/3/1/0/131071256/nubolip.pdfIn PDF document text
    • http://files.saraashleybeil.com/uploads/1/3/0/7/130740264/c0cd3e7c.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/1/0432/1538/8840/files/vifetuvex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2032/8853/files/garozite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4622/4551/files/64341046973.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wurawosupamajo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3622/9278/files/61173058282.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6037/9286/files/bipeladepivetudipilibak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5520/0918/files/93985552168.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1863/3894/files/2987146607.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6320/6307/files/vugijofivodasigimivulofeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4077/5064/files/fesowokepidax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3260/8921/files/45666321975.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_off00008f40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F40 5228 bytes
SHA-256: c952fca105b4ea52652cc625e4566673434d1e875fd63627bb7138fbac9aedfc
font_01_sfnt_off0000a123.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA123 10828 bytes
SHA-256: 0ec9d1897809a2fa5789f43edeebc168277d58bf9b7b1daa9add8f9ca236ef52

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