MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, contains the URL that is also present in the heuristics, suggesting a lure to a malicious site. The presence of multiple links to external PDFs, some hosted on static.usrfiles.com, indicates a link farm strategy.
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/wix?keyword=dry+reforming+of+methane+pdf
- https://static.usrfiles.com/ugd/289c5e_349b3d5b925d4c0795f8da1b50908742.pdf
- https://static.usrfiles.com/ugd/10b11f_da3bfcc2557649c6bbb76caf9a03b490.pdf
- https://static.usrfiles.com/ugd/5fd5c1_ce90191b81964121b3986f9f825b2fbb.pdf
- https://static.usrfiles.com/ugd/ab0441_93c0a17a13434bdf822eafd99db40b1d.pdf
- https://cdn.shopify.com/s/files/1/0432/8279/2606/files/monaj.pdf
- https://cdn.shopify.com/s/files/1/0432/5546/4104/files/85773840896.pdf
- https://cdn.shopify.com/s/files/1/0437/7234/6526/files/3400718425.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65587220918.pdf
- https://cdn.shopify.com/s/files/1/0433/4452/7528/files/51690598212.pdf
- https://cdn.shopify.com/s/files/1/0433/9299/1399/files/definicion_de_enfermedades_cardiovasculares_oms.pdf
- https://static.usrfiles.com/ugd/6c98bc_0b995586db9b481aa70b892c5e491cd5.pdf
- https://static.usrfiles.com/ugd/35e1ce_08e40d232f7f4b37a14613a80468c0a3.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_off000153fe.bin0f9e00f907c78b3a4b6e887afaaf724c09d43a7e14b87b52c195c1a936035f9a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x153FE | 5344 bytes |
font_01_sfnt_off00016611.bin0417c8976565051fd6cca4a27df97d431c66dad876ef5f74fb87235485d70147 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x16611 | 11544 bytes |
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