MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains numerous embedded URLs, a technique often used to redirect users to malicious sites. Specifically, one URL points to a known malicious redirector, and the document body text is obfuscated but contains references to sheet music and the malicious URL. The ML classifier strongly indicated maliciousness, and the presence of a link farm further supports the malicious intent.
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.ru/pify?keyword=another+one+bites+the+dust+bass+sheet+music+pdf
- http://files.bryangatescfi.com/uploads/1/3/0/8/130874030/cbde3.pdf
- http://files.ashleymaltzmd.com/uploads/1/3/0/7/130775677/7635624.pdf
- http://files.stmarymagdalenewpg.org/uploads/1/3/1/8/131856531/badifa.pdf
- https://cdn.shopify.com/s/files/1/0430/6593/3973/files/pofixigivarozan.pdf
- https://cdn.shopify.com/s/files/1/0436/4494/4542/files/online_bengali_story_books_free_download.pdf
- https://cdn.shopify.com/s/files/1/0430/6409/8970/files/46480898284.pdf
- https://cdn.shopify.com/s/files/1/0430/2117/2897/files/67278892571.pdf
- https://cdn.shopify.com/s/files/1/0430/6049/4490/files/34458487311.pdf
- https://cdn.shopify.com/s/files/1/0431/1370/9730/files/628458957.pdf
- https://cdn.shopify.com/s/files/1/0430/0141/3785/files/cathflo_activase_instructions.pdf
- https://cdn.shopify.com/s/files/1/0435/3681/0152/files/zivujimitakedo.pdf
- https://cdn.shopify.com/s/files/1/0433/9191/0038/files/project_on_social_issues_for_class_10_cbse.pdf
- https://cdn.shopify.com/s/files/1/0430/6622/8898/files/linexixasejoxib.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_off000042f5.binbef60d0c02f5cf4de15f31b8ef3267865d1440bdc9e8aa6ebd62aad04c0f29cc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x42F5 | 5492 bytes |
font_01_sfnt_off0000556f.bin1e3a15048ec68972a311b2e09fb28bcd4cd1482ac6aeda1c9bbeb3868061962f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x556F | 9640 bytes |
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