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.cc'. The document body, though heavily obfuscated, contains a URL that matches the redirector. The PDF also exhibits characteristics of a link farm, with numerous external links, many pointing to 'static.usrfiles.com'. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.
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=alphabet+letters+for+kindergarten+pdf
- https://static.usrfiles.com/ugd/6350c7_e02d395c4a254c7fa55a80d3d9604611.pdf
- https://static.usrfiles.com/ugd/76de1a_7401561f73084995b2a8b5c75ab863aa.pdf
- https://static.usrfiles.com/ugd/c068f8_30d47d3d5fbb498dac07ebe77db0862c.pdf
- https://static.usrfiles.com/ugd/3e9e83_2045218b8365478aa85b47fcae4296bc.pdf
- https://static.usrfiles.com/ugd/50c35f_8208db9bf3ff4143b939ad7f9f731edf.pdf
- https://static.usrfiles.com/ugd/b8c837_ed579ad385854d5c88d434ac03084648.pdf
- https://static.usrfiles.com/ugd/cb2bed_98190c332ed7433586959d2ac6df5942.pdf
- https://cdn.shopify.com/s/files/1/0463/3447/6449/files/bufotigamubafodarifurer.pdf
- https://cdn.shopify.com/s/files/1/0434/8048/1958/files/employees_provident_fund_board_annual_report.pdf
- https://cdn.shopify.com/s/files/1/0432/5113/8715/files/43116527514.pdf
- https://cdn.shopify.com/s/files/1/0457/6821/2646/files/how_to_report_hacker_in_pubg_mobile.pdf
- https://cdn.shopify.com/s/files/1/0437/3794/0122/files/breaking_the_habit_of_being_yourself_free.pdf
- https://cdn.shopify.com/s/files/1/0429/2454/0071/files/apollineo_e_dionisiaco_colli.pdf
- https://cdn.shopify.com/s/files/1/0457/5651/4460/files/cafeland_world_kitchen_mod_apk.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_off000050c5.binbe67c9778509a31882626b1c0dc9e9dc555ec95f2e9d363b5f766ab3d9ec8f01 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x50C5 | 5496 bytes |
font_01_sfnt_off00006360.bine9a9273352a27b401dc877b0d35f6f0fe1015057ad672be2ab2665ddbf0bd579 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6360 | 9580 bytes |
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