Malicious PDF — malware analysis report

Static analysis result for SHA-256 5333df5c12a2c0d3…

MALICIOUS

PDF

35.3 KB Created: 2020-10-25 20:06:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-09
MD5: 69811f2226d9006d5f034b34a36d5f14 SHA-1: 6d59b505f18d7c84782d1279554b85fa13faeefc SHA-256: 5333df5c12a2c0d39ded62ba805bb414108ec96abfa0d5f83997453241a4cdd7
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://ttraff.cc/123?keyword=physical+and+chemical+change+worksheet+grade+4 In PDF document text
    • https://temazojirilezin.weebly.com/uploads/1/3/2/3/132302863/vemufe.pdfIn PDF document text
    • https://wefejakero.weebly.com/uploads/1/3/0/8/130814310/7075312.pdfIn PDF document text
    • https://naxedomabaxa.weebly.com/uploads/1/3/1/6/131606472/7167709.pdfIn PDF document text
    • https://melegejisud.weebly.com/uploads/1/3/1/3/131379421/4cdf25a.pdfIn PDF document text
    • https://sewiwojura.weebly.com/uploads/1/3/4/3/134371681/7344938.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/1/0467/8038/3385/files/tanenobomunosani.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5506/9849/files/bobebeketopapofazesa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7877/9047/files/likitawalom.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/ancient_civilizations_textbook_6th_grade_california.pdfIn PDF document text
    • https://s3.amazonaws.com/bopuxosavubare/global_supply_chain_management_and_international_logistics.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/jilanapikulifugiluku.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/searching_and_sorting_programs_in_java.pdfIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/twilight_life_and_death_download_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/rosa_luxemburg_accumulation_of_capital.pdfIn PDF document text
    • https://s3.amazonaws.com/ritoma/effective_technical_communication_tata_mcgraw_hill.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/160b468a-6198-4d82-a401-04d12c77aaa9/mumajuruxavolonorab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7905ce42-d966-466b-b702-561750d03d4b/71228360154.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a8c0a16-b6ca-4f14-b39e-0291070632f5/risesetawereb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af13c147-ef17-4411-8085-b1a9e63eed8d/7991732781.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de386de2-df6a-4406-80c5-4ae54a4d77ea/sozamesot.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_off00004f24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F24 5700 bytes
SHA-256: d7bb8bcfd116d65229831cbbde5bf9923784eb977478609af764f516f70630e4
font_01_sfnt_off0000626e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x626E 8764 bytes
SHA-256: ac8393059dd5da8203756d9455da7578cafb82231f7a41e9cce1c948c062b29a

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