MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector. The document body text, though heavily obfuscated, contains the target URL 'https://ttraff.ru/pify?keyword=debussy+syrinx+sheet+music' and other PDF links. This suggests the document is designed to trick users into clicking malicious links, likely leading to further malware downloads or phishing attempts.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 6
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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=debussy+syrinx+sheet+music In PDF document text
- http://files.theatrere.co.uk/uploads/1/3/0/7/130740483/fovaximu.pdfIn PDF document text
- http://fojasigo.cdelcurto.com/uploads/1/3/1/4/131407406/nafabezubuwu.pdfIn PDF document text
- http://xudewinu.ccharrogate.com/uploads/1/3/1/4/131409090/korip.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://cdn.shopify.com/s/files/1/0430/1501/2511/files/6570311058.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4296/3613/files/15695720610.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/7148/0742/files/luwigitudavezetoverawo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/1126/7990/files/97207110071.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0058/5636/files/ganagekin.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/viruxirekosarobavogerij.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/9772/5864/files/21089456941.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/8783/7849/files/solution_book_of_thomas_calculus_12th_edition.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7009/5521/files/xuzefu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/6997/1363/files/81120175937.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8353/8331/files/vamalepejegozaka.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/2350/6336/files/xitowupojevi.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 |
|---|---|---|---|
font_00_sfnt_off00006311.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6311 | 4880 bytes |
SHA-256: ab3d65f1dbf5ff7dfb71bf16ccb046a21b106e762d819ec3dc7454fa43461e75 |
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font_01_sfnt_off0000737f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x737F | 14656 bytes |
SHA-256: 18d9a109afcb6f3e4a3fa68028e91ce2f47cab739172544ab4dc4092b6daef49 |
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font_02_sfnt_off0000a171.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA171 | 4324 bytes |
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3 |
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