Malicious PDF — malware analysis report

Static analysis result for SHA-256 118c2222f5fd3e8c…

MALICIOUS

PDF

39.9 KB Created: 2020-10-02 15:07:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3117ceba4797755de06f3507f90f55fa SHA-1: ab5023fbbbcbb72b76fc95707d007dee38a77b99 SHA-256: 118c2222f5fd3e8cc025c76b04896c9b5508c5fe453407dd41239394f4fc407f
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=unthinking+eurocentrism+pdf In PDF document text
    • http://files.electricslidinggates.co.uk/uploads/1/3/1/3/131383333/milakevamegur.pdfIn PDF document text
    • http://files.caribelli.com/uploads/1/3/1/4/131453924/zabosunezozev_nabuwe_tezodet.pdfIn PDF document text
    • https://site-1039668.mozfiles.com/files/1039668/natitaranatonos.pdfIn PDF document text
    • https://site-1040251.mozfiles.com/files/1040251/pebedogokadufaja.pdfIn PDF document text
    • https://site-1039143.mozfiles.com/files/1039143/10712206080.pdfIn PDF document text
    • https://site-1036745.mozfiles.com/files/1036745/xiliz.pdfIn PDF document text
    • http://koravogij.expandedhealing.com/uploads/1/3/1/4/131437792/viteselowejo.pdfIn PDF document text
    • http://dubare.constantlyintouch.com/uploads/1/3/1/4/131437208/fumegez.pdfIn PDF document text
    • http://files.louisefutchertherapy.co.uk/uploads/1/3/1/3/131398547/1155303.pdfIn PDF document text
    • http://files.meghanfoleyyoga.com/uploads/1/3/0/7/130775497/9b35cf7c37e.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/1/0429/5809/4495/files/maytag_bravo_washer_troubleshooting.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/4751/4012/files/lost_drivers_license_texas_cost.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/8167/8247/files/tests_for_convergence_of_sequences.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9433/8453/files/20441923191.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/8689/7046/files/96507957848.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_off000060cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60CD 5384 bytes
SHA-256: df7052e64af8091338b05181f54bb84e0f9a7766c575e32e32e536386bf75e8b
font_01_sfnt_off000072fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72FE 9308 bytes
SHA-256: 1f012bcd11b557ceff00b993089a05987b7555ea694dd59fa58e2bd51153bf77

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