MALICIOUS
154
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, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains this URL and also references a large number of external PDF links, many hosted on 'static.usrfiles.com'. This suggests a link farm or redirection strategy designed to lead users to malicious content. 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.cc/wix?keyword=idalberto+chiavenato+gest%25C3%25A3o+de+pesso
- https://static.usrfiles.com/ugd/b8c837_791fd0c048c3440aaea525b831fe53db.pdf
- https://static.usrfiles.com/ugd/b8c837_396b74fddcfa4f3ea21613a5cf13104d.pdf
- https://static.usrfiles.com/ugd/b8c837_b2703d6f23054d5e99f2ec4970135d8d.pdf
- https://cdn.shopify.com/s/files/1/0433/9410/5509/files/dimob.pdf
- https://cdn.shopify.com/s/files/1/0432/2230/2888/files/82207664501.pdf
- https://cdn.shopify.com/s/files/1/0435/3340/2266/files/43656479449.pdf
- https://cdn.shopify.com/s/files/1/0434/5646/3015/files/10452356059.pdf
- https://cdn.shopify.com/s/files/1/0432/9360/6048/files/zelda_ocarina_of_time_3ds_walkthrough.pdf
- https://cdn.shopify.com/s/files/1/0434/8457/7956/files/11259617155.pdf
- https://static.usrfiles.com/ugd/b8c837_8851dfdb54e04661ba2ea098443a24b2.pdf
- https://static.usrfiles.com/ugd/b8c837_7859c7c65faa4e118d26c53da8b0fea7.pdf
- https://static.usrfiles.com/ugd/b8c837_4dcae3f53e624f2aa444ceba4c10c12f.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_off00007151.bin3d0ee57339bf7993b0e49c95bde2d20329c5044d8f03bb7820da9fe17a8676fe |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7151 | 5792 bytes |
font_01_sfnt_off00008463.bind279080edde1117afaf3c39ab066205a7dc6184f7262621ada383e62a561a069 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8463 | 12696 bytes |
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