MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a link that redirects to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to sheet music and the malicious URL, suggesting a lure to entice users to click the link. The ML classifier also strongly flagged this PDF as malicious. The primary IOC is the redirector URL.
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=you+are+the+reason+duet+sheet+music+pdf
- http://lajored.artbymadelinesmith.com/uploads/1/3/1/4/131408899/tiripuvarowubivowas.pdf
- http://tesuwivo.fiveonfoxhill.com/uploads/1/3/0/8/130814124/6636709.pdf
- http://files.moenkopimemories.org/uploads/1/3/1/0/131070904/vunawimikilipotazo.pdf
- https://cdn.shopify.com/s/files/1/0431/1921/4758/files/43005950488.pdf
- https://cdn.shopify.com/s/files/1/0431/1282/4993/files/gapojusabudijekomiz.pdf
- https://cdn.shopify.com/s/files/1/0434/0151/1064/files/sefatadiwit.pdf
- https://cdn.shopify.com/s/files/1/0429/2280/3366/files/dupusijokinegotesawuleze.pdf
- https://cdn.shopify.com/s/files/1/0434/1946/7943/files/74646595837.pdf
- https://cdn.shopify.com/s/files/1/0430/4273/4237/files/vafogatitoxejibit.pdf
- https://cdn.shopify.com/s/files/1/0429/0979/4463/files/kugiwe.pdf
- https://cdn.shopify.com/s/files/1/0435/2199/9008/files/assertive_behaviour.pdf
- https://cdn.shopify.com/s/files/1/0432/1925/5454/files/88627922402.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_off000088b9.bina543f40b04fa3346c0a37ee403632fae19aa5a3a232912b56c1802ff3434719a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x88B9 | 5324 bytes |
font_01_sfnt_off00009aac.bin9302471766f46f85d7b091d82cfb8289cb8f13d3ec5c01602147357a376391af |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9AAC | 15664 bytes |
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