MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=fitbit+app++windows'. This URL is likely part of a phishing or scam campaign, using the 'Fitbit app windows' lure to entice users. The document also features a large number of external PDF links, many hosted on static.usrfiles.com, which is flagged as a link farm. 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=fitbit+app++windows
- https://cdn.shopify.com/s/files/1/0430/7881/1810/files/3065158934.pdf
- https://cdn.shopify.com/s/files/1/0429/8424/3351/files/48885583357.pdf
- https://cdn.shopify.com/s/files/1/0433/6582/6719/files/91279013013.pdf
- https://cdn.shopify.com/s/files/1/0462/3853/1738/files/associate_android_developer_certification_training.pdf
- https://cdn.shopify.com/s/files/1/0445/3544/7711/files/hague_apostille_convention_1961.pdf
- https://static.usrfiles.com/ugd/9734e7_2c8cbebd7b184deb920dc409bea12e09.pdf
- https://static.usrfiles.com/ugd/5e81b9_34fc37b33be7482688b7fd6889a78087.pdf
- https://static.usrfiles.com/ugd/57c819_0daa3bb8ddd345eb973fbf574c9c79cf.pdf
- https://static.usrfiles.com/ugd/ea78e0_7b2a6931adef4881bdf815083bc71abc.pdf
- https://static.usrfiles.com/ugd/2ca09c_fd3b82d0ecc640189ea296fd22e4ad28.pdf
- https://static.usrfiles.com/ugd/269bb8_7262acb59e3443a6aebacab095947397.pdf
- https://static.usrfiles.com/ugd/b8c837_81171a28561940d09ed1a8e461cc24b1.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_off000061e4.bin8cd3169f9477f2e245d4b1d38f83022319fb2b9f1a6757cd43f5cc0e2ba52265 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x61E4 | 4680 bytes |
font_01_sfnt_off000071d9.binc5bf5257faeaf41a0ec20d913c50528200a78966530601b797aa4f2f8e7f9249 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x71D9 | 10248 bytes |
font_02_sfnt_off000094f2.binff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x94F2 | 4324 bytes |
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