MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a high number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at ttraff.ru. The document body, though partially corrupted, contains text related to 'Cfa institute books level 1 pdf', suggesting a lure to trick users into clicking the malicious link. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed for malicious redirection.
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=cfa+institute+books+level+1+pdf
- http://files.foxlakeresort.com/uploads/1/3/0/8/130814594/2876884.pdf
- http://files.bedrockgardens.org/uploads/1/3/1/0/131069824/pufevoxivuf.pdf
- http://files.elliottfamilyreunion.com/uploads/1/3/2/6/132682051/a61492b.pdf
- http://tewasal.inpursuitmultisport.com/uploads/1/3/0/7/130775868/c37676c4b.pdf
- https://cdn.shopify.com/s/files/1/0435/8012/9441/files/filewilopomigirane.pdf
- https://cdn.shopify.com/s/files/1/0427/9477/8791/files/39461314118.pdf
- https://cdn.shopify.com/s/files/1/0431/5371/9453/files/86478418564.pdf
- https://cdn.shopify.com/s/files/1/0428/0002/1667/files/59951226545.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xogasetixudaxaw.pdf
- https://cdn.shopify.com/s/files/1/0431/1236/6229/files/33267883914.pdf
- https://cdn.shopify.com/s/files/1/0434/0465/6797/files/puropisik.pdf
- https://cdn.shopify.com/s/files/1/0431/0722/1658/files/takolabivizi.pdf
- https://cdn.shopify.com/s/files/1/0435/3087/9125/files/bepuvudo.pdf
- https://cdn.shopify.com/s/files/1/0431/9179/5875/files/20892795105.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_off00006faf.bin96bc635cef94322a060846eb22b9e6a06e63b68201cbe34e59dad03efca0cf68 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6FAF | 5160 bytes |
font_01_sfnt_off0000815d.bin5ad69745a33678bf7d5302b15ff7e86cd65fd2eef177b98386137a4793a65106 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x815D | 10672 bytes |
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