MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a large number of links to external PDF files, functioning as a link farm. One of these links, 'https://ttraff.cc/pify?keyword=encyclopedia+of+computer+science+4th+edition+pdf', is identified as a malicious redirector. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent to redirect users to potentially harmful content.
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=encyclopedia+of+computer+science+4th+edition+pdf
- http://files.dashtangles.com/uploads/1/3/1/6/131606343/tubinid.pdf
- http://lenipi.stbernardsnakerun.org/uploads/1/3/1/3/131398140/5802522.pdf
- http://files.servingthesouthbay.com/uploads/1/3/1/4/131437532/wuwetuzulekubi-xobeforor-pidiluvojikiz.pdf
- http://files.rotaryclubofwindsor.org/uploads/1/3/0/8/130813111/8685883.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0430/0803/2922/files/ruwalupeluworofe.pdf
- https://cdn.shopify.com/s/files/1/0436/1938/5502/files/codify_parametric_and_computational_design_in_landscape_architecture.pdf
- https://cdn.shopify.com/s/files/1/0428/0867/2423/files/88426319488.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/17844710077.pdf
- https://cdn.shopify.com/s/files/1/0428/4504/4892/files/small_to_excel_converter_online.pdf
- https://cdn.shopify.com/s/files/1/0437/6851/2669/files/fitibudepemapamag.pdf
- https://cdn.shopify.com/s/files/1/0430/6904/6935/files/ffxiv_shirogane_map.pdf
- https://cdn.shopify.com/s/files/1/0429/9636/7511/files/77463896162.pdf
- https://cdn.shopify.com/s/files/1/0439/2887/9272/files/the_barefoot_investor_audible.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_off00006d55.binbc625da770e1333c66b464745da1d57c1c8f64af12d24b57e2cf051c2afdda42 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6D55 | 5544 bytes |
font_01_sfnt_off0000800f.bin56d575a1e7887bf4cce361c14bc6661156a999533592d38ad2426c190f826287 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x800F | 10984 bytes |
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