Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3f9a310409e7ff…

MALICIOUS

PDF

41.9 KB Created: 2020-09-30 20:51:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-19
MD5: c420832848d296a5e9acc837e6efff33 SHA-1: 6575ddb7f28c62f2bc52f4e609e1e329d11d0111 SHA-256: 4e3f9a310409e7ff03c6f98c28005ae5933ada0748673c9db105fc2f0a553ffb
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/strik?keyword=andhra+pradesh+road+map+pdf In PDF document text
    • https://site-1036829.mozfiles.com/files/1036829/63379007253.pdfIn PDF document text
    • https://site-1037176.mozfiles.com/files/1037176/sebuvesefob.pdfIn PDF document text
    • https://site-1037261.mozfiles.com/files/1037261/riwevegosizeluwutobago.pdfIn PDF document text
    • https://site-1037120.mozfiles.com/files/1037120/vawojiv.pdfIn PDF document text
    • https://site-1036751.mozfiles.com/files/1036751/6466479750.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/1/0431/6663/0050/files/2017_eagles_schedule_playoffs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4922/0258/files/lanali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/3798/5690/files/comment_fusionner_document.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8549/6469/files/winrar_portable_filehippo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ebcefd9-7af4-4879-b5a9-f43f6981376b/mopedurotiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fdad75a-5933-45d2-881e-4de62c20bff9/42353439224.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb3ea7b2-b773-4d25-8b28-dc0a0b6abe7e/91860229635.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60391a11-7d6f-4acd-8b1d-4fef9034a543/55624701034.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1867/3566/files/ctet_omr_sheet_and_answer_key_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8603/6646/files/rasativitozetu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/6135/1078/files/pipevine_swallowtail_caterpillars_for_sale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6092/7393/files/write_image_to_sd_card_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9925/1093/files/99488530266.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_off0000658c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x658C 5240 bytes
SHA-256: 45def2ced2a0ff90c5b2b0a747e4414d3ed00faf33443ca677bb2714e001baa2
font_01_sfnt_off00007730.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7730 10444 bytes
SHA-256: 114b7d6cb5461ff681175368760fae76ab6b15b22d7413f7c86ba6802258622e

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