MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm or redirection strategy. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is used to obscure the final destination. The document body, though partially corrupted, contains text related to 'violin sheet music' and the malicious URL, indicating a lure to entice users to click the link.
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=arrival+of+the+birds+violin+sheet+music+pdf
- http://files.cozlounge.com/uploads/1/3/0/9/130968984/6356311.pdf
- http://xobumap.andrewsbyreferral.com/uploads/1/3/1/6/131606490/6304497.pdf
- http://malit.alabamaheritage.com/uploads/1/3/1/4/131437605/105b4ba8309.pdf
- http://files.spaatthecolonnade.net/uploads/1/3/0/7/130739366/5634133.pdf
- http://files.benjamincraig.org/uploads/1/3/1/4/131483020/4583910.pdf
- https://cdn.shopify.com/s/files/1/0430/6858/8194/files/lezezulubimosal.pdf
- https://cdn.shopify.com/s/files/1/0438/0409/8722/files/gudasodinot.pdf
- https://cdn.shopify.com/s/files/1/0436/3508/1374/files/ignou_b._ed_study_material.pdf
- https://cdn.shopify.com/s/files/1/0429/0124/2022/files/kewusenujigupisum.pdf
- https://cdn.shopify.com/s/files/1/0435/4162/7029/files/72826933184.pdf
- https://cdn.shopify.com/s/files/1/0431/7573/9560/files/50918712475.pdf
- https://cdn.shopify.com/s/files/1/0434/9001/7430/files/65404295762.pdf
- https://cdn.shopify.com/s/files/1/0429/0222/5059/files/xawikulonomot.pdf
- https://cdn.shopify.com/s/files/1/0429/2768/5799/files/14492240189.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_off00005e22.bin316937cd34ca6072584196b567632d6c4fcd9ab52f5a6aa6c7db841448a967d0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5E22 | 5584 bytes |
font_01_sfnt_off000070ec.binaf2f7f0e0d90d6fa6e36b40db904f847aa56d839e6ced19127ba101827991f90 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x70EC | 15732 bytes |
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