Malicious PDF — malware analysis report

Static analysis result for SHA-256 5501d407945fbb9f…

MALICIOUS

PDF

44.3 KB Created: 2020-10-30 05:38:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-04
MD5: c023d321c449e8c7cb28a51da107a406 SHA-1: ea1cf4c33cce00e16e108c39626cd2be6d9ba098 SHA-256: 5501d407945fbb9f39cf9dc379a2b4317e290d3499b344e5792a13a4e84f995d
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=disappearing%20spoon%20pdf%20free%20download In PDF document text
    • https://bujegeti.weebly.com/uploads/1/3/4/3/134355457/9975549.pdfIn PDF document text
    • https://s3.amazonaws.com/pusumowi/11557619822.pdfIn PDF document text
    • https://s3.amazonaws.com/gajabedafot/river_of_blood_speech_analysis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374518/normal_5f8eab0f5bc34.pdfIn PDF document text
    • https://s3.amazonaws.com/toguvaju/javascript_design_patterns_o_reilly_download.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/fabf5383a5d6.pdfIn PDF document text
    • https://buliduxefexefux.weebly.com/uploads/1/3/1/6/131636978/putajidogufos.pdfIn PDF document text
    • https://fevapeju.weebly.com/uploads/1/3/4/4/134468187/fatolegidexa-pamijib.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006152.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006152.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off00009699.bin)
    • https://cdn.shopify.com/s/files/1/0434/7622/2118/files/11709534956.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0506/8914/7034/files/61113108489.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 extracted file (font_00_sfnt_off00006152.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006152.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6152 5008 bytes
SHA-256: d0110d9d100fefa2d7eb456a85171b2e6533e2939f0ac04526bddccd9fcee104
font_01_sfnt_off00007275.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7275 10760 bytes
SHA-256: a13b18d56b76110e618f5e4f48460ca0eab3f2361effb82b57793ebe1358c2ae
font_02_sfnt_off00009699.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9699 4324 bytes
SHA-256: ad623bc7c681097dfa1224999cf6cc6072d3ca9a137655dc1129b0261f0b357c