Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ddc82628fa2c042…

MALICIOUS

PDF

40.2 KB Created: 2020-10-31 07:15:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-26
MD5: aaeb016c7d6ff6de8e9b6351b0ae5b2e SHA-1: 236e44b6cecbb899d3cfd7720b645196c12b5337 SHA-256: 3ddc82628fa2c04249c5481849a49975c91895dec065b7efa06a42e888615603
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://gettraff.ru/wb?keyword=simplification%20problems%20with%20solutions%20pdf%20download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4415546/normal_5f98ce896fa5b.pdfIn PDF document text
    • https://nikokabiliru.weebly.com/uploads/1/3/1/4/131409463/be74aef64.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375907/normal_5f8a4884c6af6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403818/normal_5f97e82057c7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371025/normal_5f8b2c45a5771.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/1/0493/6820/3430/files/gikibobifalumojikokin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/0808/8005/files/xenifigobebagelanojiret.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/5396/0353/files/quartiles_worksheet_kuta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9272/9246/files/bexoronometozemoju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/7805/6619/files/garepudovorilanunegizow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ebdd4590-d5d9-4cd9-80aa-45aee321c672/jakanaritudiduk.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_off00005882.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5882 5732 bytes
SHA-256: 774cc6d40d567aba93fe027ad5b60b78911ef803e3f516962c7324e85ffa4c73
font_01_sfnt_off00006be1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE1 11696 bytes
SHA-256: fb658175269e578d4100227f822acbe1c3130f44bf274cdb0b551b73a73d5fb6