Malicious PDF — malware analysis report

Static analysis result for SHA-256 d633daca412d3013…

MALICIOUS

PDF

44.8 KB Created: 2020-10-14 18:06:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5792e5c415e7a5526a7ab0d569041f7a SHA-1: fc2ab58924ce85a79ced3a5660b500c610232080 SHA-256: d633daca412d3013b58ef31b66abb357cc6f703960e7dbd69c825bbda1a3fa50
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://ggtraff.ru/pify?keyword=electric+guitar+parts+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365656/normal_5f870c60a4348.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365998/normal_5f86ffafe31f4.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/runemevurexuziwone.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/1441493.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/1/0434/2402/2690/files/sun_devil_liquidation_tempe_az_85281.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0415/8364/files/volumes_of_gases.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9859/0372/files/66412303331.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2358/8773/files/napoleon_hill_the_law_of_success_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9722/2037/files/bulk_trash_phoenix_85014.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/7992/1564/files/fugosufeko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/1706/2558/files/5978308502.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9cd6c6fa-5abe-4e2f-9cff-dc44d2f4e8ca/xugavozew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45e125a5-48be-4b1f-8b4f-7550a31ab407/zokefijevufimiw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/506fc9c7-75f3-47b9-ac84-da7a6b0e0dde/xizusokigoserekapedusi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71612bbe-e427-4b7c-bc49-4f87868b86c8/59022239003.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8a36480-db7d-4872-8aba-637eae28ebeb/26885480727.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3830c3f-0aef-40ef-86b6-1ddee02e8aa7/vudavofidabaramabasilodow.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_off000071fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71FE 5200 bytes
SHA-256: 0eb8312bd418fee2036659d834a1f65f9ac2c67cedd48a3b4d6a72292cb21a85
font_01_sfnt_off000083ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83BA 10136 bytes
SHA-256: 7369a395847e94ec3f3c515cbc5012d052bbbe9cfd98d6ac8f014912372bdfe2

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