Malicious PDF — malware analysis report

Static analysis result for SHA-256 657d05fc9d4188f7…

MALICIOUS

PDF

35.5 KB Created: 2020-10-02 00:58:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: c17f6be6601a031909f1ec59055a8d15 SHA-1: 50ccaa8a68a2cc1a00e51035c153a8cd1e776f2d SHA-256: 657d05fc9d4188f7dba9a1f13bc3dff380706bb56edb345298c2ce12585c3919
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.me/pify?keyword=witchery+coven+witch+spawn In PDF document text
    • http://fasibem.cannabisforward.org/uploads/1/3/0/7/130775958/9138808.pdfIn PDF document text
    • http://gofipi.auntyhelenskitchen.com/uploads/1/3/0/9/130969710/099e01d99abe78f.pdfIn PDF document text
    • http://files.homecandyco.com/uploads/1/3/1/3/131381819/8834339.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/1/0484/4404/7528/files/26706004319.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9030/0068/files/guns_germs_and_steel_conquest_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/6979/6263/files/zaxowawejoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b508e9d-5959-40a5-a227-c66535a0e083/lusitobegajo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b5e7ea3-8d2f-4be2-9346-955acc1f6736/35852980841.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ef60512-82b6-40c1-ab37-b638f027cded/fuxemosaxadapokavemeb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d915f63e-a666-4b85-896c-67220432141b/dixubekaso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ad22b3b-9e9b-4df1-87e7-8b2b8e91cda3/88773584501.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_off00004d5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D5A 5256 bytes
SHA-256: 36c06c93786ec9bb6f4f6040bfbf2b2174a7d9db8faa13a0137a3f7ced67a11c
font_01_sfnt_off00005f58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F58 10044 bytes
SHA-256: 86432e2090126a3eb8329b20f6fa7252f94423cbc3dd88e92f9b8534cb6308f1

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