MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF was flagged by multiple critical heuristics for containing a malicious redirector link and a large PDF link farm. The embedded URL `https://ttraff.ru/wix?keyword=linen+house+linen+sheets` is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL and references to other PDFs hosted on `static.usrfiles.com`, suggesting a coordinated effort to distribute malicious content or phishing lures.
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/wix?keyword=linen+house+linen+sheets
- https://static.usrfiles.com/ugd/4117a9_8b74117f37bf43f598895538e3f2b873.pdf
- https://static.usrfiles.com/ugd/defcb2_733a889dba774837958daeec32575838.pdf
- https://static.usrfiles.com/ugd/7603ae_662e235ba6df42e2bdf595d4d89d1478.pdf
- https://static.usrfiles.com/ugd/b8c837_f5f882c6613d40fea5d074ba869034d0.pdf
- https://cdn.shopify.com/s/files/1/0428/3678/7356/files/waterfall_chart_ppt_template.pdf
- https://static.usrfiles.com/ugd/b8c837_7547b62a960b4f7ba97de62b12829a1d.pdf
- https://static.usrfiles.com/ugd/122077_76e1e8a1e1274392bfb2c55883459b33.pdf
- https://static.usrfiles.com/ugd/a2d007_4eca58f7d9254720976a1e8f646bf22b.pdf
- https://static.usrfiles.com/ugd/7603ae_d2b4ad6b9f86437bab2655682d72cc7b.pdf
- https://static.usrfiles.com/ugd/76156b_082e1c0cab594947af6ea780f0513dd6.pdf
- https://static.usrfiles.com/ugd/9904c2_ce0085979ea24d68b2c7ec4e82807d71.pdf
- https://static.usrfiles.com/ugd/3e5d97_4c5ac6c10ca94a0db83369414a435fc4.pdf
- https://static.usrfiles.com/ugd/1f2646_bc9d9b85906543818b6fc32f6a8c0fd1.pdf
- https://static.usrfiles.com/ugd/b8c837_62ead4b5d7db4e8381977a53c9133e96.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_off00004c80.bincb40203718987b837fdfacf812da2f6c883ccbae57fe951c3f548841802c0d1d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4C80 | 4408 bytes |
font_01_sfnt_off00005b7c.bin2ef58e84db3ca515ae688e2f37204e70f7787516644e0625881fa2cd1b25146f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5B7C | 9956 bytes |
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