MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a large number of embedded links, many of which point to external PDF files, suggesting an attempt at SEO manipulation or a link farm. One critical heuristic identified a link to known malicious redirector infrastructure, specifically 'https://ttraff.cc/pify?keyword=arquitectura+sostenible+pdf+libros'. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains references to the same malicious URL, reinforcing the finding.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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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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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.cc/pify?keyword=arquitectura+sostenible+pdf+libros
- http://fulib.stmatthiasminocqua.com/uploads/1/3/1/6/131637016/70463f3da4f6b9a.pdf
- http://files.philipkemp.com.au/uploads/1/3/1/3/131379680/5574036.pdf
- http://files.nelsoneyewear.com/uploads/1/3/1/3/131379485/puwuxazapesetafakezi.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0437/2715/9445/files/bed_making_procedure.pdf
- https://cdn.shopify.com/s/files/1/0430/0436/2906/files/maxuzadibopije.pdf
- https://cdn.shopify.com/s/files/1/0430/6511/4775/files/8744991134.pdf
- https://cdn.shopify.com/s/files/1/0438/4263/3890/files/lozukesidenavu.pdf
- https://cdn.shopify.com/s/files/1/0434/9575/1842/files/62004300942.pdf
- https://cdn.shopify.com/s/files/1/0429/6572/9429/files/dinove.pdf
- https://cdn.shopify.com/s/files/1/0428/6310/0070/files/aptitude_formulas_free_download.pdf
- https://cdn.shopify.com/s/files/1/0432/7863/1072/files/gelotojobudurowiluxoboxow.pdf
- https://cdn.shopify.com/s/files/1/0429/1959/2102/files/32919153162.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00004df9.bin30b60f92ba78ec5e29d6bf17a74d88659a9e2ea9b86c44659f88a9c161c97f52 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4DF9 | 5404 bytes |
font_01_sfnt_off00006059.bin7ac50187ca010f2b976649a92e0846b0081f600aa5b4ef30e68f3d32d5c07bf1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6059 | 11636 bytes |
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