Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd9598b1b511ff3…

MALICIOUS

PDF

52.7 KB Created: 2020-11-02 07:42:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-26
MD5: d7a05c4fee60e92b3eeb65b0eee0efcb SHA-1: 858643d69eb55f1bcc31433d0496cf5aabcb2f0f SHA-256: 3dd9598b1b511ff3105f58b726e415a49cbb9262784a0c80bc97095f56d29de6
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://ttraff.cc/123?keyword=the+guide+chapter+summary In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379035/normal_5f9e223dd268e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408589/normal_5f966ffd7e407.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368489/normal_5f87758843551.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366360/normal_5f98ca3a7e3c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377697/normal_5f9382ed213a1.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/1/0506/7390/9914/files/56497999484.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/148564ab-d671-4a8c-8388-64cf994627ae/vesinu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/0346/8735/files/40478779287.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9766/1348/files/southern_baptist_devotionals.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b713fbac-0363-43a3-8c9e-e1ff58cd9404/xajolixovudalukokavesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/5171/8070/files/79558098241.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/7347/7052/files/74739173536.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6379346f-57c9-41ec-85c2-0e2b2eb969b1/kofusonebuzigasuvotoduxaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0178ca12-7f18-430d-ae3e-357531ea777d/38447412097.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006aa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA4 5508 bytes
SHA-256: 892272b51c867f9edc9376d3e3ce54d1753d1ea4fb47139ef58295287b339945
font_01_sfnt_off00007d3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D3C 10240 bytes
SHA-256: 9f04ac3c2fa5166f1ce80788276c6e8f2638548a92e646337ba579e32aeef861
font_02_sfnt_off0000a075.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA075 21848 bytes
SHA-256: 97081ef230a21a66dc892f109d4e892760d21af2f1e6f40e421197584632c531

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