MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a large number of embedded links, many of which point to a URL identified as a malicious redirector. The document body, though heavily obfuscated, contains references to the redirector URL and other benign-looking PDF links, suggesting a tactic to disguise malicious intent. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious activity.
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/wix?keyword=act+vocabulary+practice+worksheets+p
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/4d6844_7b3f8064c03749a9b54743bc3f6cc5e6.pdf
- https://static.usrfiles.com/ugd/b8c837_ea145b9d95fa4104aaa97b7668ab9385.pdf
- https://static.usrfiles.com/ugd/8cbfce_84313d6c10604158b15ff691a360134d.pdf
- https://static.usrfiles.com/ugd/76156b_23ba4deb9d8349d2bb5c49869d1120c0.pdf
- https://static.usrfiles.com/ugd/b8c837_9624d14830c74476a1917027b3de8b7f.pdf
- https://static.usrfiles.com/ugd/d2751c_b38b56d60ebe4087b8ccdfea6d6d1a77.pdf
- https://static.usrfiles.com/ugd/6cf0f5_0ed595453d594e89b9786989d769b86c.pdf
- https://static.usrfiles.com/ugd/b8c837_8f50a5e426af48a5a32e29de52799ca1.pdf
- https://static.usrfiles.com/ugd/87d215_740cf5bd5f444e2486fdd193daa015f0.pdf
- https://static.usrfiles.com/ugd/c1de29_2bae88c3c39f4724ba0b5c05147a9a0c.pdf
- https://static.usrfiles.com/ugd/b8c837_20b40999307347f894b197bbabb4e867.pdf
- https://static.usrfiles.com/ugd/ce14f3_27af5aa73b424b6881df031fde250f6c.pdf
- https://static.usrfiles.com/ugd/b8c837_309a309bfe6143808f7624433e6b85f0.pdf
- https://static.usrfiles.com/ugd/b8c837_3c241bf2bd904e6089d9dccdb7324562.pdf
- https://static.usrfiles.com/ugd/b8c837_1239dc3b41c64075bf518c58abdd1436.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/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000065fa.bina45fcbc6baa4aca5308f3bb6541c8e3dce46ce68da98a9996e3b6c38e0cc843f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x65FA | 5468 bytes |
font_01_sfnt_off000078a0.bin58ff7d9f2c579f44765cc1de35b08889fd3c58a89e27e1e6a7c215b38052079c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x78A0 | 10204 bytes |
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