MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though partially corrupted, includes text related to 'Ubiquiti unifi firmware upgrade guide' and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm strategy to improve search engine ranking for malicious 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.com/pify?keyword=ubiquiti+unifi+firmware+upgrade+guide
- http://files.neighborhoodc.org/uploads/1/3/1/8/131871814/3093297.pdf
- http://mesetej.prettylittlebath.co.uk/uploads/1/3/0/8/130814328/vezegup_gavufubu_mimidom.pdf
- https://cdn.shopify.com/s/files/1/0432/5523/4710/files/36560542175.pdf
- https://cdn.shopify.com/s/files/1/0434/5911/7206/files/introduction_to_anthropology_and_sociology.pdf
- https://cdn.shopify.com/s/files/1/0434/8503/6706/files/malinconia_ninfa_gentile_spartito.pdf
- https://cdn.shopify.com/s/files/1/0429/0255/2742/files/janujatelitewawaxumo.pdf
- https://cdn.shopify.com/s/files/1/0434/7074/9861/files/30506213256.pdf
- https://cdn.shopify.com/s/files/1/0432/8115/4204/files/doxarodepetikora.pdf
- https://cdn.shopify.com/s/files/1/0437/7001/9994/files/attention_guitar_fingerstyle.pdf
- https://cdn.shopify.com/s/files/1/0433/7880/2846/files/6703694450.pdf
- https://cdn.shopify.com/s/files/1/0464/0669/7115/files/google_academico_tesis.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_off000061b8.bin0820ca72afce4c380795a10c5d55607503d81bb793739a9d3fcd9965ba6b9a2e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x61B8 | 5500 bytes |
font_01_sfnt_off0000745d.bina832c49a5b0949e410d4401c553363a077ae3c7ad2783d3659660467900ac355 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x745D | 12440 bytes |
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