MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or phishing campaign. The primary redirector URL is 'https://ttraff.ru/pify?keyword=twinkle+twinkle+little+star+mozart+piano+sheet+music+pdf', which is designed to lure users with a seemingly innocuous search query. The ML classifier strongly indicates maliciousness, and the presence of embedded URLs supports the attack pattern of redirecting users to potentially harmful sites.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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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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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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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=twinkle+twinkle+little+star+mozart+piano+sheet+music+pdf In PDF document text
- http://files.dallasbrunchclub.com/uploads/1/3/0/9/130969934/lupomutuxa-sivejema-fogakete-fuxuka.pdfIn PDF document text
- http://files.butchsmetalimages.com/uploads/1/3/0/7/130776350/duzosikukaxejek-xikogojurab-tawezuniwos-palezexawajij.pdfIn PDF document text
- http://files.jaakdekoninck.be/uploads/1/3/2/3/132302924/9233465.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8894/5045/files/44711533268.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5549/6866/files/acordes_de_guitarra_canciones_infantiles.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/1103/7589/files/logizimoxun.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8933/0330/files/18052344986.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4923/8178/files/53409929289.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/5666/7541/files/xefeferovarenibagutuxo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/2588/1498/files/56290813345.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/5604/7004/files/torobuwepoboxowetilopewo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4916/4705/files/86815377711.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/3120/6808/files/xizareruzezo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/7945/1289/files/kiwitaxorasawafabolu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/5131/0488/files/92787176176.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1411/0880/files/asia_map_blank.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/9426/8320/files/lazofi.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
stream_003_off00006436.bin |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x6436 | 9756 bytes |
SHA-256: e685f7c5ebbd3ba9c42e74df77750700a57895bf17c6fc77937197480a7f44fe |
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font_01_sfnt_off0000843c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x843C | 5548 bytes |
SHA-256: a4f0d2808c63519fb580eaf374154a8bc26e71e76f2bf06003275f3ddd09def0 |
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font_02_sfnt_off0000970e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x970E | 9952 bytes |
SHA-256: 2c0cf516a31d5f88637512aa2a1c1d564453ecc039846a2eeac8ada54019c077 |
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