Malicious PDF — malware analysis report

Static analysis result for SHA-256 701348923541741d…

MALICIOUS

PDF

39.6 KB Created: 2020-10-09 01:43:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 23531f0dd4bc106770e72db4006b080f SHA-1: 674e5c5967d277292b5b5f17e5efd1e1ca6ebfcb SHA-256: 701348923541741d917c6fa459ffd0113807b9839acf669ad9224fc743a72baf
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://cctraff.ru/pify?keyword=can+you+capitalize+earth In PDF document text
    • http://kenukok.literacygatewayinstitute.com/uploads/1/3/1/8/131856456/8574112.pdfIn PDF document text
    • http://salopemaf.cityxlab.com/uploads/1/3/1/4/131437657/2942085.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/1/0431/1446/3394/files/tnt_flinchum_rent_payment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8501/1869/files/57291725804.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0431/3247/files/enter_the_gungeon_boss_currency.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/1874/9605/files/62680231858.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/8916/5981/files/6008352011.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e39bde43-89ce-46a5-b042-a30d921063eb/90558488687.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbb0c3df-1f14-4261-a658-b0ebf8d08485/49686927396.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ddfa7b22-4947-4b87-af51-3fe5b342dfd7/xazekejememuzakusa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da782fc6-4cea-4038-8111-85977a85dd04/xofine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b18397f-e5b5-4719-9832-32207e8cc779/jobozatusutigetexavademaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5cad435-7402-4b0f-9434-020da86efb8d/48072562551.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_off00005f16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F16 4900 bytes
SHA-256: efaff41ba06d07536909e43a4009b429454447e14e5076873ddfe2ebbf2d9196
font_01_sfnt_off00006fca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FCA 10000 bytes
SHA-256: 248fcc8d91a6b237565940fe8fa050193e408497765a7ec93abb5aadb629246d

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