MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on 'static.usrfiles.com'. The document body, though heavily obfuscated, contains the same URL found in the redirector heuristic, suggesting a deliberate attempt to lure the user to a malicious site. The ML classifier also strongly indicated 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.com/wix?keyword=noun+adjective+adverb+clauses+worksheets+with+answers
- https://static.usrfiles.com/ugd/ce0e6d_790c5f3ed559438291de7238620cf66a.pdf
- https://static.usrfiles.com/ugd/2b98a3_2b4add3cf0db4f42bc0ed6f059d1d20a.pdf
- https://static.usrfiles.com/ugd/b8c837_6109d0da593947988d5a3197125eb307.pdf
- https://static.usrfiles.com/ugd/253000_cf5c749f5a8342728d7beb9fd9d6b4ed.pdf
- https://static.usrfiles.com/ugd/2e79a6_52da4a703980417e8cc3348bc7785deb.pdf
- https://cdn.shopify.com/s/files/1/0435/5879/7471/files/citra_android_2019_apk.pdf
- https://cdn.shopify.com/s/files/1/0432/6490/1284/files/acselerator_rtac_sel-_5033_software_instruction_manual.pdf
- https://cdn.shopify.com/s/files/1/0432/2371/1903/files/mathematically_correct_answers.pdf
- https://cdn.shopify.com/s/files/1/0433/5969/9109/files/23501163490.pdf
- https://cdn.shopify.com/s/files/1/0432/4173/4311/files/8553466620.pdf
- https://static.usrfiles.com/ugd/f14cf6_5317b4524e284e79810b30087b3143d2.pdf
- https://static.usrfiles.com/ugd/f55bec_ddfa0455fd9a493297c9c1291e27c062.pdf
- https://static.usrfiles.com/ugd/77d535_b391c99a5416475d83811994afa0b55d.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_off000080fb.bina17885b4fd577e0298a64705d5055d2ac7c2363fd7008e9cf236b3df412a17d8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x80FB | 2828 bytes |
font_01_sfnt_off00008af5.bin6e8baab186d18fadfb3a6b8141cce0d9269356af4c34932d18ae793eaf91274d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8AF5 | 5428 bytes |
font_02_sfnt_off00009d7c.binb41631f586000b00acc6fd35f97079003715e18a4088980619a580e2f3b5b31b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9D7C | 10024 bytes |
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