Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ddf2edf562c8904…

MALICIOUS

PDF

49.3 KB Created: 2020-10-15 20:42:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-26
MD5: f1a36344ca414003cece6fd30bf636b3 SHA-1: d89deef0d6536cd301e1e1761785d3c976780305 SHA-256: 3ddf2edf562c8904b6df9c910923f937163c69b148cef6d3baed7258f9dec056
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/123?keyword=stylistic+devices+exercise+pdf In PDF document text
    • https://site-1043321.mozfiles.com/files/1043321/vobeseposos.pdfIn PDF document text
    • https://site-1037835.mozfiles.com/files/1037835/36317132477.pdfIn PDF document text
    • https://site-1038363.mozfiles.com/files/1038363/92136529414.pdfIn PDF document text
    • https://jawowigo.weebly.com/uploads/1/3/0/7/130774982/1d32287.pdfIn PDF document text
    • https://xijonezamo.weebly.com/uploads/1/3/1/4/131407630/8774924.pdfIn PDF document text
    • https://site-1037842.mozfiles.com/files/1037842/xegipefigilatakonutidi.pdfIn PDF document text
    • https://site-1040612.mozfiles.com/files/1040612/tabivudofapesopinowe.pdfIn PDF document text
    • https://rajomiluti.weebly.com/uploads/1/3/2/6/132682989/legifezufusijelusexa.pdfIn PDF document text
    • https://lixaworone.weebly.com/uploads/1/3/1/8/131871871/riripitel.pdfIn PDF document text
    • https://rabifupokuwu.weebly.com/uploads/1/3/1/1/131164250/8256202.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/9051060.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/1/0481/6417/6021/files/95797190069.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8021/3185/files/nepixames.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2494/0708/files/43850723244.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9072/2454/files/vertical_leg_press_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5afc61d1-0352-4f39-8d12-a220cfba3998/35977553018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95c2dbf5-b42c-48e5-aee4-2d838bdbc571/jipexirazar.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_off00008231.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8231 5272 bytes
SHA-256: db95c7e3bad7d4f3f8e11f3e55ddf346d6d60c1aab5cdad3cefcf8aca13a3575
font_01_sfnt_off0000943c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x943C 10352 bytes
SHA-256: 76f3e1e56227989feeed70d5077f1b9115c32d3db09b6736660654b75c01a1fa

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