MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a large number of embedded links, many of which point to a link farm and a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to a 'Spanish grammar workbook pdf'. The ML classifier strongly indicated maliciousness, and the heuristics confirm the presence of malicious redirector links and a link farm.
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.cc/pify?keyword=spanish+grammar+workbook+pdf
- http://files.3pinapod.com/uploads/1/3/1/6/131607010/f8711f.pdf
- http://files.faithstjoe.com/uploads/1/3/0/9/130969656/zudowar-xijomimafexeju-lanuluzojug-lokavu.pdf
- http://files.berkeleyspringschurchofchrist.org/uploads/1/3/0/8/130814058/2b67e641b5340.pdf
- http://files.cfuwscbursarysociety.org/uploads/1/3/0/7/130738806/aae5824ae0d8.pdf
- http://files.cfuwsc
- https://cdn.shopify.com/s/files/1/0430/7052/1495/files/76436304183.pdf
- https://cdn.shopify.com/s/files/1/0427/9848/1564/files/zawakuzewo.pdf
- https://cdn.shopify.com/s/files/1/0433/7195/4334/files/72751766307.pdf
- https://cdn.shopify.com/s/files/1/0427/9628/6111/files/difag.pdf
- https://cdn.shopify.com/s/files/1/0429/9037/0975/files/14658854802.pdf
- https://cdn.shopify.com/s/files/1/0433/5602/9093/files/bodolakonuwefotizisanimep.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34803766861.pdf
- https://cdn.shopify.com/s/files/1/0433/0881/0398/files/55806585115.pdf
- https://cdn.shopify.com/s/files/1/0432/3010/1668/files/3293324563.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/50537202024.pdf
- https://cdn.shopify.com/s/files/1/0439/8202/8958/files/tolusalapapikurido.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/30617095305.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_off000094f7.bin2c0791f36459ca6535007d2dc2cd9413e9b6866d571d184ec42f7e09139a2484 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x94F7 | 5412 bytes |
font_01_sfnt_off0000a722.bin83c3c18da738bfc9541be7e1ae786d83b10a0a9ea40b38f2cf8dad22316fba0d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA722 | 10328 bytes |
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