MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous links to external resources, masquerading as a practice book, which is a common lure for phishing or malware distribution. The primary redirector URL, https://ttraff.ru/pify?keyword=grammar+and+writing+practice+book+grade+3+pdf, is flagged as malicious and part of an SEO link farm, indicating a deliberate attempt to distribute harmful content. The ML classifier strongly supports the malicious nature of this PDF.
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=grammar+and+writing+practice+book+grade+3+pdf In PDF document text
- http://temudupe.venezuelanscryforfreedom.com/uploads/1/3/0/8/130815017/diruk.pdfIn PDF document text
- http://files.lifeofchristrosary.com/uploads/1/3/2/6/132695633/femorubizabafopo.pdfIn PDF document text
- http://files.hetztronics.co.uk/uploads/1/3/1/3/131380120/kipowul.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/1/0433/8260/3927/files/flv_downloader_chrome.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/7652/7014/files/17603374696.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87294954422.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37638787324.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/5997/9174/files/16313383445.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/8801/1673/files/30210008288.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/9919/9390/files/cds_2020_result.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/5004/8420/files/60491884771.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/9920/2467/files/dajofan.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8461/9680/files/42038109697.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4677/2646/files/46446036201.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0989/1742/files/46005805007.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_off00004fef.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4FEF | 5536 bytes |
SHA-256: 6de4910e1a101e3987fcfe3bb12c29acd02eb2a150722326fa4ecba538612e6e |
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font_01_sfnt_off00006316.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6316 | 5756 bytes |
SHA-256: 0d0dc7b88b6830cb59f54d8131cd1c8858f2328de5f07b8c5c8b0c2c0f1d4c57 |
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font_02_sfnt_off000076b0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x76B0 | 10140 bytes |
SHA-256: 7af85db9baa698f60b71d4826ea6c137f179c65f2b5b524a3d36ee2db017fbe8 |
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