MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains embedded links, one of which, 'https://ttraff.cc/wix?keyword=assistant+teacher+interview+questions+and+answers+pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, appears to contain text related to interview questions, suggesting a lure. The presence of numerous other PDF links, many pointing to 'usrfiles.com', indicates a link farm strategy, likely to obscure the malicious redirector. 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/wix?keyword=assistant+teacher+interview+questions+and+answers+pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/dc98cc_b283d94432cc424a9f51e2dbb25d1590.pdf
- https://static.usrfiles.com/ugd/b8c837_4d0dcc6942254291ad08b1dd63b43c85.pdf
- https://static.usrfiles.com/ugd/b8c837_3af5d69f79524033a29d31b85a9af94a.pdf
- https://static.usrfiles.com/ugd/d17951_9becdaffeee6491ca6ab58217c12f90b.pdf
- https://cdn.shopify.com/s/files/1/0450/5042/9598/files/cbc_blood_test_normal_values_chart.pdf
- https://cdn.shopify.com/s/files/1/0428/4756/8039/files/56127960505.pdf
- https://cdn.shopify.com/s/files/1/0437/8476/5602/files/2020_april_current_affairs_in_tamil.pdf
- https://static.usrfiles.com/ugd/b8c837_b458b3bc71f041ed8de160528ca3fe6f.pdf
- https://static.usrfiles.com/ugd/0a593f_35c961677f4c40848d368c54ef2ca5e2.pdf
- https://static.usrfiles.com/ugd/b8c837_dbfb65b7e1a24f628eca6b1112a25e08.pdf
- https://cdn.shopify.com/s/files/1/0440/7810/4728/files/gajetifexuruseri.pdf
- https://cdn.shopify.com/s/files/1/0434/6635/8934/files/french_adverbs_exercises.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_off0000682a.bin914acb5d34258742a5e12e52d9678b483d7b630e752f323a1a640156594fff78 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x682A | 5476 bytes |
font_01_sfnt_off00007adb.binb6b658aadcb889bdbbc5f12e4d0a43997ef7803e93235ebac90bc4b6475094c4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7ADB | 10416 bytes |
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