Malicious PDF — malware analysis report

Static analysis result for SHA-256 782501d8c818ae5f…

MALICIOUS

PDF

48.5 KB Created: 2020-10-16 22:33:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-16
MD5: 25576a029e253a940d5999d96fe9f94a SHA-1: 6a28c4b767713a2535fc9deb05953282faac90ca SHA-256: 782501d8c818ae5fde81d1671dd7b39058e5d12b53433cf4f3a18b58fe8c9ffd
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.ru/123?keyword=social+science+class+8+notes+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368760/normal_5f888435b6f67.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368471/normal_5f87ce26897a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366057/normal_5f8948a1946c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369782/normal_5f88a40b01d38.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366331/normal_5f88b5dad6bd8.pdfIn PDF document text
    • https://debasomi.weebly.com/uploads/1/3/0/7/130739769/816a77e35.pdfIn PDF document text
    • https://wopeduvolevim.weebly.com/uploads/1/3/0/7/130776212/xalutos.pdfIn PDF document text
    • https://kagilovudugavap.weebly.com/uploads/1/3/1/1/131164538/835debeed.pdfIn PDF document text
    • https://nejalebemenogun.weebly.com/uploads/1/3/1/0/131070187/0852a936b47b69a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366341/normal_5f88425c71000.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367286/normal_5f8836b4cbf31.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/1/0434/4414/2245/files/saint_james_african_methodist_episcopal_church.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/0126/9405/files/68087635578.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1750/1853/files/track_and_field_rules_in_hindi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0523/8692/files/costway_ice_maker_ep23464_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac77e589-d4aa-4593-810b-3b597f7f34a2/nejika.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d08a2e1-b490-4e34-bc36-c09bbb5e31e6/79962140788.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81147c09-bbae-410e-9e03-28c1c2fd8592/8222161956.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0078971f-36b8-405e-9f69-d2f3eb511a90/lugarigubexeposufomegik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7175e6f7-b9ed-4a02-950e-a6ab5ce3a09a/destilacin_por_arrastre_de_vapor.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_off00007f2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F2D 5352 bytes
SHA-256: 2a96a83d9b7487408dfa5a21172f76e9e1fb26a9fa7537b8531e63f1bfde3e43
font_01_sfnt_off00009162.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9162 10388 bytes
SHA-256: 8e7142bb4ccdadeda2f1b6ffd71ca468945ca522b2022dcc87ae4166b079a900

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