MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains embedded links that redirect to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though partially garbled, suggests a lure related to an academic worksheet. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external links indicates a potential SEO link farm or content-spinning operation designed to attract victims.
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=kayarian+ng+pang-+uri+worksheet+grad
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/b8c837_25d5a4b562784fd4b839be6dde1cb774.pdf
- https://static.usrfiles.com/ugd/3b7182_35a790871308483d83a0b700cd567ab4.pdf
- https://static.usrfiles.com/ugd/de3d83_e274cf3155c640319d364a0e8904c41d.pdf
- https://static.usrfiles.com/ugd/f459ea_90e93c83308440d3a1e4e32e76f8057e.pdf
- https://static.usrfiles.com/ugd/6c98bc_04b5b17bf6ec491ba8da28e4788dd5d5.pdf
- https://static.usrfiles.com/ugd/73f3b0_0c433cec5ce24220b0dcdca07f1acfbe.pdf
- https://static.usrfiles.com/ugd/37428b_40e9432a3869481ca713aebd46b1b170.pdf
- https://static.usrfiles.com/ugd/f63f29_8f6cfab21f954f01b549bdb381742479.pdf
- https://static.usrfiles.com/ugd/cfbfd2_aec250eb07824c0599152db63e835f3b.pdf
- https://static.usrfiles.com/ugd/b8c837_89ca5d07582545b3a6e3f7cf3843dbbc.pdf
- https://static.usrfiles.com/ugd/bfbc46_bf7b2416cf784ad08d785647d9775cbe.pdf
- https://static.usrfiles.com/ugd/0511f5_33b8c1ccb9fd4650a0524ab3809bc397.pdf
- https://static.usrfiles.com/ugd/02beb7_7a802cdb624a4c699d894957d01351aa.pdf
- https://static.usrfiles.com/ugd/a01749_218e11ecfaac4cb3ba4baee1dd7fa655.pdf
- https://static.usrfiles.com/ugd/5cf23b_424920fa869a465e8099f8fc171bb875.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_off00005e22.bin08702f1cea51ed1a04f642844432c9357f5f563313bc69a3ff6e76d6936ca136 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5E22 | 5448 bytes |
font_01_sfnt_off000070be.binee7c4f33f5191d7dd5b8218b6a0efdcb832c6cfe9d6b54373d74d123438f1301 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x70BE | 9496 bytes |
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