MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains embedded links that redirect to malicious infrastructure, specifically identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to 'free pdf' and a URL that aligns with the redirector heuristic. The ML_NYX_PDF_MALICIOUS flag further supports the malicious nature of the file. The primary attack vector appears to be luring users to a malicious site via a deceptive link.
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.ru/pify?keyword=the+coldest+winter+ever+free+pdf
- http://files.onlinerehabilitation.org/uploads/1/3/1/0/131071037/45f7b.pdf
- http://files.pjeterkoleci.com/uploads/1/3/2/6/132681938/f414f68e3faf.pdf
- http://files.theclevelandhike.com/uploads/1/3/2/7/132712514/67f66.pdf
- https://cdn.shopify.com/s/files/1/0431/9186/1412/files/99882397304.pdf
- https://cdn.shopify.com/s/files/1/0428/3393/6547/files/86831132799.pdf
- https://cdn.shopify.com/s/files/1/0428/4999/2860/files/dasubojajedujokisagepot.pdf
- https://cdn.shopify.com/s/files/1/0430/8025/3593/files/14652116683.pdf
- https://cdn.shopify.com/s/files/1/0438/2218/6653/files/36161421766.pdf
- https://cdn.shopify.com/s/files/1/0432/5530/0249/files/wagimux.pdf
- https://cdn.shopify.com/s/files/1/0428/8266/2553/files/53750977135.pdf
- https://cdn.shopify.com/s/files/1/0433/0654/9406/files/tatufa.pdf
- https://cdn.shopify.com/s/files/1/0433/5131/0488/files/jabavasab.pdf
- https://cdn.shopify.com/s/files/1/0434/7602/5497/files/29294435621.pdf
- https://cdn.shopify.com/s/files/1/0430/8657/7828/files/old_school_runescape_splashing_guide.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/
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000a6a2.bin65d4857b9647989fca7da3d3d1ad2ff4a0860b4f263c8b626b9595f213c8e86d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA6A2 | 5136 bytes |
font_01_sfnt_off0000b830.bin624819ce693af1eb21cd040f075e239751deb0d4f9d66d1265128ce1d2fcabc8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB830 | 10488 bytes |
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