MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a link disguised as a download for sound effects, which redirects to a known malicious URL. It also functions as a link farm, with numerous embedded links pointing to external PDFs, likely for SEO manipulation or to host further malicious content. The presence of a visual download button heuristic further supports the lure-based attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 6
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF 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.
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall 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.
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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF 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.
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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe 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.
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Embedded URL info EMBEDDED_URLOne 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.ru/pify?keyword=airplane+take+off+sound+effects+free In PDF document text
- http://files.shopwicksnbits.com.au/uploads/1/3/1/3/131379792/7568800.pdfIn PDF document text
- http://files.hracademia.org/uploads/1/3/0/9/130969992/tarubajiredixison.pdfIn PDF document text
- http://files.hotgandts.com/uploads/1/3/0/8/130813413/zavedevobufutopuso.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/1/0436/9534/1723/files/witewopat.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/4607/4525/files/analise_sinttica_e_morfologica.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6732/6110/files/vizuzajisejukuv.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6102/6719/files/19549849167.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/8377/4614/files/sample_essay_for_ielts_writing_task_2.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/9150/1990/files/71012289626.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/4748/3552/files/bodetiwegitapivado.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7036/5589/files/exercice_appareillage_electrique.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/2122/2567/files/bracing_in_construction.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1782/2620/files/sovowinubujiwimojekofo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4456/0281/files/lamumajujolazaxalugewe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8144/9124/files/algebraic_expressions_test.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7122/5502/files/dekifosib.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/6747/2037/files/bankers_adda_current_affairs_one_liner.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.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000053f7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x53F7 | 5200 bytes |
SHA-256: 628c814a210521130bf49b8026ba712cb237caa295c9f0c1fa549bcb48912f3d |
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font_01_sfnt_off000065ad.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x65AD | 14924 bytes |
SHA-256: f792d2c0944d798f7706e296ff04c60008ab872ca1d14055a1c2bac676199d5c |
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