MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the critical PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The primary malicious URL is https://ttraff.com/pify?keyword=chuy%25E1%25BB%2583n+%25C4%2591%25E1%25BB%2595i+pdf+th%25C3%25A0nh+%25E1%25BA%25A3nh. The document body, though heavily obfuscated, contains text related to PDF conversion and the wkhtmltopdf tool, suggesting a lure to disguise the malicious intent. The ML classifier strongly supports the malicious verdict.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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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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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.com/pify?keyword=chuy%25E1%25BB%2583n+%25C4%2591%25E1%25BB%2595i+pdf+th%25C3%25A0nh+%25E1%25BA%25A3nh In PDF document text
- http://files.carlosorta.com/uploads/1/3/0/8/130814877/6995631.pdfIn PDF document text
- http://files.makingyourlifecountradio.org/uploads/1/3/2/3/132302764/7082808.pdfIn PDF document text
- http://files.festival-calendar.com/uploads/1/3/0/7/130775282/5b9b9ea8f0b7.pdfIn PDF document text
- http://files.parkvilleautogroup.com/uploads/1/3/1/8/131871780/62a82bda62.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/1/0436/6965/1609/files/kuvekulebu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/8298/7173/files/bitzenburger_fletching_jig.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/0744/3103/files/46974482643.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7283/1134/files/76216222644.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0993/2440/files/34909272875.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30899714004.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/4387/1127/files/61524818882.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/2563/6250/files/vocabulary_for_ielts_academic_writing_task_1.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/4951/6199/files/iskender_pala_su_kasidesi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0444/4323/8567/files/difference_between_skills_and_abilities.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/7227/5103/files/gosefubuzamoj.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3514/7933/files/ruparirinexu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/1165/4307/files/zikupusivuwigakegixokowed.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_off000060b2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x60B2 | 5684 bytes |
SHA-256: f4a41802118586c4a32be413f219ebd9ca22d0894104f44d26e74119bbd57390 |
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font_01_sfnt_off000072a5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x72A5 | 21944 bytes |
SHA-256: 33834f6e9f198a1ff64f1bf41b525f518c16ac19f1d6fbcd09f0ff0bb5310702 |
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