MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating a link to known malicious infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be a search result for 'chopin nocturnes op 9 sheet music' and also contains the malicious redirector URL. The PDF_SEO_LINK_FARM heuristic indicates the presence of numerous external links, suggesting a link farm designed to attract traffic. The ML classifier also strongly flagged this PDF as malicious.
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/pify?keyword=chopin+nocturnes+op+9+sheet+music
- http://files.bromptoncourttownhomes.com/uploads/1/3/0/7/130740068/4722397fc54ff.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0431/5018/0503/files/future_jersey_download.pdf
- https://cdn.shopify.com/s/files/1/0428/2168/1315/files/debikilifu.pdf
- https://cdn.shopify.com/s/files/1/0446/4692/4451/files/sign_language_abc.pdf
- https://cdn.shopify.com/s/files/1/0461/9236/1622/files/53302214761.pdf
- https://cdn.shopify.com/s/files/1/0429/6625/3724/files/52799519551.pdf
- https://cdn.shopify.com/s/files/1/0432/9439/2485/files/nota_novel_bimasakti_menari.pdf
- https://cdn.shopify.com/s/files/1/0433/2965/0843/files/cpc_practice_exam.pdf
- https://cdn.shopify.com/s/files/1/0431/8950/2110/files/6418831701.pdf
- https://cdn.shopify.com/s/files/1/0434/7081/5397/files/23139531436.pdf
- https://cdn.shopify.com/s/files/1/0437/1401/9496/files/74824166825.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/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005533.bin46e1b33053f90213beeac43a79b72b42a75ce6768e384ec6edb083d2b662ef0c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5533 | 4992 bytes |
font_01_sfnt_off000065f7.bin926f45082d7604d8fb14373e2003397c7bebc0c19a5c935161a117677d1e7f86 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x65F7 | 10240 bytes |
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