MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a mass of external links, many of which point to a link farm designed to manipulate search engine results. One prominent link, 'https://ttraff.ru/pify?keyword=understanding+the+linux+kernel+5th+edition+pdf+free+download', is identified as a malicious redirector. This suggests the document's primary purpose is to drive traffic to malicious sites under the guise of providing a free download.
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=understanding+the+linux+kernel+5th+edition+pdf+free+download
- http://files.llenise.com/uploads/1/3/0/7/130775309/vogiji.pdf
- http://files.grinlaw.com/uploads/1/3/0/7/130775342/2208056.pdf
- http://files.artisanresidentialdesign.com/uploads/1/3/2/3/132303068/1868334.pdf
- https://cdn.shopify.com/s/files/1/0429/4259/5239/files/74096840589.pdf
- https://cdn.shopify.com/s/files/1/0436/4576/3744/files/98760259090.pdf
- https://cdn.shopify.com/s/files/1/0431/5417/8216/files/74491340717.pdf
- https://cdn.shopify.com/s/files/1/0428/0349/5071/files/befixomuwaxoputade.pdf
- https://cdn.shopify.com/s/files/1/0435/9494/0573/files/71568555654.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dofupuz.pdf
- https://cdn.shopify.com/s/files/1/0434/2985/5393/files/xudijolojotexo.pdf
- https://cdn.shopify.com/s/files/1/0433/4590/3774/files/89632043686.pdf
- https://cdn.shopify.com/s/files/1/0432/4494/5571/files/algebra_michael_artin_2nd_edition_download.pdf
- https://cdn.shopify.com/s/files/1/0440/9769/9992/files/nujavejupiximasofizepos.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005c80.bine470bc6bc565294014832fbb232ac24e8fa831e1b380c93b3ae8e3cc91dc3b6d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5C80 | 5524 bytes |
font_01_sfnt_off00006f56.bin8fc477bb8961fe20f7171c3e2e4303d6d4e6428f004b147cb7508adac6ffaf28 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6F56 | 9996 bytes |
font_02_sfnt_off0000917c.bince7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x917C | 4324 bytes |
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