MALICIOUS
234
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a large number of embedded links, many of which point to external websites. One critical heuristic identified a link to known malicious redirector infrastructure, specifically 'https://ttraff.ru/pify?keyword=aprender+a+desenhar+corpo+humano+pdf'. The document body also contains this URL and other links, suggesting a link farm or redirection scheme designed to lead users to malicious content. The ML classifier strongly supports the malicious nature of this PDF.
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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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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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=aprender+a+desenhar+corpo+humano+pdf In PDF document text
- http://setutorot.wihealthmatters.org/uploads/1/3/1/3/131383771/3a1d185947dbf62.pdfIn PDF document text
- http://files.plasticvillefornewbies.com/uploads/1/3/1/3/131398188/xobapilepaparag_vapapikokax_xafanexobuju.pdfIn PDF document text
- http://files.fadesign.com/uploads/1/3/0/7/130776401/57e890af2c9.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://cdn.shopify.com/s/files/1/0430/4361/8965/files/.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3069/9414/files/ravapejaworijunesogozuvi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9713/7056/files/femidevewogodu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/7927/9527/files/tafakirafe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0203/5354/files/90775933343.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1647/9132/files/81033383847.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8096/5534/files/52816099454.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9439/2485/files/97253672756.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9064/8996/files/ford_1600_tractor.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4023/4902/files/busodemanaved.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6268/9946/files/jolunizepizivep.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006425.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6425 | 5108 bytes |
SHA-256: aee63eb335ecdfac7a30b8e6f59805d07991fece53b9284f830949764febcc7e |
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font_01_sfnt_off00007538.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7538 | 12120 bytes |
SHA-256: 1daf159f2cca018c20df4c8ffb657fe571f81826a448ae811fd96db6ba7f7b57 |
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font_02_sfnt_off000099bc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x99BC | 4324 bytes |
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230 |
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