MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a link to a known malicious redirector, ttraff.cc, disguised as 'autocad course material pdf'. This indicates a social engineering attempt to trick the user into navigating to a potentially harmful site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious link is sufficient to infer a phishing or redirection attack pattern.
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=autocad+course+material+pdf
- https://static.usrfiles.com/ugd/e5cbe5_13923b2938dc44119203e46b488b24d7.pdf
- https://static.usrfiles.com/ugd/b8c837_cee671552ef741289eafb298edd3806e.pdf
- https://static.usrfiles.com/ugd/314c35_b9bb73652ccd446088624dcd35fb4692.pdf
- https://static.usrfiles.com/ugd/8b4172_a5e029a898134407ad006d0e56c44407.pdf
- https://static.usrfiles.com/ugd/3f80ec_f8e14eda9e16448fb14c6c1e7a7ca504.pdf
- https://cdn.shopify.com/s/files/1/0438/0885/0081/files/widoti.pdf
- https://cdn.shopify.com/s/files/1/0434/5308/7901/files/brazilian_jiu_jitsu_techniques_for_beginners.pdf
- https://cdn.shopify.com/s/files/1/0434/0911/3253/files/tazarivesijopituvik.pdf
- https://cdn.shopify.com/s/files/1/0430/4509/3533/files/72473714230.pdf
- https://cdn.shopify.com/s/files/1/0431/3061/8011/files/xanesunewanutegojivulifuv.pdf
- https://cdn.shopify.com/s/files/1/0446/0858/5891/files/leed_core_concepts_guide_v4.pdf
- https://static.usrfiles.com/ugd/9374a7_efa7885edab24465b5afe963ff3544a4.pdf
- https://static.usrfiles.com/ugd/930050_a64854df27e642d78484fd0dbcb233d9.pdf
- https://static.usrfiles.com/ugd/ea5d7b_2515a8975e824fceb4de8ed1d704d558.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_off00006980.bin3d9beac172ac2d613c8a24889c25236154436eba51bad0f797cc0d775b19c04c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6980 | 5288 bytes |
font_01_sfnt_off00007b69.bin128f4133ef8fe50fc8a5d4e427d469f833a7601306f03fc0c66192d0c7321df1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7B69 | 10272 bytes |
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