MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a mass of external links, many hosted on Shopify, designed to create a link farm. One of these links, https://ttraff.cc/pify?keyword=huffman+coding+example, is identified as a malicious redirector. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The ML classifier strongly indicates maliciousness.
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=huffman+coding+example
- http://files.midatlanticbrassbandfestival.com/uploads/1/3/0/7/130775557/230140.pdf
- http://files.bulubulup.com/uploads/1/3/1/3/131398428/kunomifubupesodufagi.pdf
- http://files.helenhalliday.com/uploads/1/3/1/3/131379266/5801697.pdf
- https://cdn.shopify.com/s/files/1/0429/0864/7580/files/kekelejujowewatu.pdf
- https://cdn.shopify.com/s/files/1/0433/9102/5306/files/kadavexebegezugoxufoga.pdf
- https://cdn.shopify.com/s/files/1/0431/8858/4605/files/31492922879.pdf
- https://cdn.shopify.com/s/files/1/0427/4916/5734/files/42836141016.pdf
- https://cdn.shopify.com/s/files/1/0437/3299/2161/files/gezuluwopokaduru.pdf
- https://cdn.shopify.com/s/files/1/0429/6320/6307/files/87939073689.pdf
- https://cdn.shopify.com/s/files/1/0432/3685/1874/files/defifajopariritu.pdf
- https://cdn.shopify.com/s/files/1/0432/1270/1854/files/57060323724.pdf
- https://cdn.shopify.com/s/files/1/0433/2807/7992/files/fiwefirasalifux.pdf
- https://cdn.shopify.com/s/files/1/0433/6680/9765/files/mekonozakagorugamegituxuk.pdf
- https://cdn.shopify.com/s/files/1/0429/2699/7663/files/nomuwozoluwapitip.pdf
- https://cdn.shopify.com/s/files/1/0438/5911/6182/files/xovefokegifomajewiti.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000a472.bin95cb4d3abb15377ba6343303abaea7f5b8a23a62aee1d3e215442f5b15fc3992 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA472 | 5228 bytes |
font_01_sfnt_off0000b632.bine1f68cd51fe5aee9a4d5f8f9dffc40f51642c3d44017141c40215afa003a0c8b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB632 | 14408 bytes |
font_02_sfnt_off0000e39f.binb40e0d0defe972582ad7e739fc4d795bb6a3f7e00f71b5f1de95c03cb5bfb272 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE39F | 16148 bytes |
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