MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains numerous embedded links, with one heuristic specifically identifying a malicious redirector. The document body, though heavily obfuscated, contains text and URLs that appear to be part of a link farm designed to drive traffic to malicious sites. The ML classifier strongly indicated maliciousness, supporting the conclusion that this PDF is used for malicious redirection.
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/wb?keyword=pdf%20fotosintesis%20tumbuhan
- http://sekuw.thirdshotdrop.ca/uploads/1/3/1/3/131383483/7023424.pdf
- http://files.fromtherib.org/uploads/1/3/1/6/131637135/6220637.pdf
- http://files.columbianacoc.com/uploads/1/3/1/6/131637163/8c35b74b.pdf
- http://files.researchcubaneducation.com/uploads/1/3/0/9/130969179/5205860.pdf
- https://cdn.shopify.com/s/files/1/0432/2469/4942/files/61354139207.pdf
- https://cdn.shopify.com/s/files/1/0434/2366/2236/files/vizazulekedebometew.pdf
- https://cdn.shopify.com/s/files/1/0437/8745/2576/files/32865820107.pdf
- https://cdn.shopify.com/s/files/1/0429/8709/4177/files/andrew_ng_machine_learning_book.pdf
- https://cdn.shopify.com/s/files/1/0427/4028/5607/files/87205408217.pdf
- https://cdn.shopify.com/s/files/1/0434/4047/2229/files/53877428037.pdf
- https://cdn.shopify.com/s/files/1/0433/7932/7130/files/20300292454.pdf
- https://cdn.shopify.com/s/files/1/0439/1682/0635/files/la_cantatrice_chauve_scne_7.pdf
- https://cdn.shopify.com/s/files/1/0434/2274/4741/files/52017660581.pdf
- https://cdn.shopify.com/s/files/1/0432/1017/8717/files/32145120392.pdf
- https://cdn.shopify.com/s/files/1/0430/7091/4717/files/super_mario_ps3_game.pdf
- https://cdn.shopify.com/s/files/1/0435/4415/0165/files/aridity_index.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_off00006086.binab89ebfbbb79c6a087a98aea233d2ed31b34c89f4515108ce76b94cc0a6a5506 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6086 | 5160 bytes |
font_01_sfnt_off000071e4.bin48b8dce394f9e5758c3a0673c2253a6f48bc723600550d6103c8b64e895cd374 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x71E4 | 9804 bytes |
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