MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=oraciones+copulativas+y+predicativas+ejercicios+resueltos+pdf'. The document body, though heavily obfuscated, also contains this URL and numerous other links to PDF files hosted on 'static.usrfiles.com', suggesting a link farm or SEO poisoning attempt. The primary malicious URL is likely intended to redirect the user to a harmful site.
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=oraciones+copulativas+y+predicativas+ejercicios+resueltos+pdf
- https://static.usrfiles.com/ugd/b7ab08_5c9d840e86d14662ab7b891bbda823cb.pdf
- https://static.usrfiles.com/ugd/b8c837_60401a025f844128a3d0d79d7229c65a.pdf
- https://static.usrfiles.com/ugd/fd3290_8d670cf4866a4220aaf4d5bef3b53f47.pdf
- https://static.usrfiles.com/ugd/b8c837_f78dec1a0373414491daf7d67e769be4.pdf
- https://cdn.shopify.com/s/files/1/0431/0722/1670/files/85296459855.pdf
- https://cdn.shopify.com/s/files/1/0438/3319/6706/files/50697332429.pdf
- https://cdn.shopify.com/s/files/1/0428/5664/4774/files/169149395.pdf
- https://cdn.shopify.com/s/files/1/0433/6291/0376/files/acronis_true_image_universal_restore_iso.pdf
- https://cdn.shopify.com/s/files/1/0433/7909/7758/files/52480336885.pdf
- https://cdn.shopify.com/s/files/1/0431/1826/4469/files/que_es_uniforme_en_ingles.pdf
- https://cdn.shopify.com/s/files/1/0433/1231/6584/files/diviturepexubexosixufepov.pdf
- https://static.usrfiles.com/ugd/4b7290_47308d391b0b48cdb5d4269f73b1530e.pdf
- https://static.usrfiles.com/ugd/97634b_a13191bb1ce04922973832c40703e419.pdf
- https://static.usrfiles.com/ugd/e1d12c_1b1d85e4a9b6446b93d1262a675c5bd4.pdf
- https://static.usrfiles.com/ugd/10e3af_b19f9eb2b09e4a51bf61e9604ddbc884.pdf
- https://static.usrfiles.com/ugd/c1615c_4ed5385d50da4bd4b2e29e1d52369bdd.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_off0000623b.bincb59e05814fd358734dbeaf25c577370a7333c0543c3c3d3e9db4acb608e4737 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x623B | 5412 bytes |
font_01_sfnt_off000074c1.bin70514c9f0e4288f8a6bda683a94d5a8529bcc33170c3283e9776337fa70cd51e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x74C1 | 10904 bytes |
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