MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text suggesting it is a PDF related to grammar exercises, likely a lure. The ML classifier strongly indicated maliciousness, and the presence of a link farm further supports a malicious intent to redirect users to potentially harmful content.
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.com/pify?keyword=past+tense+present+tense+exercises+pdf
- http://files.hannabasinmuseum.com/uploads/1/3/2/8/132814387/6689639.pdf
- http://xixivize.phoxac.co.nz/uploads/1/3/2/6/132681579/6926734.pdf
- http://files.westmorelandks.com/uploads/1/3/0/8/130814769/64b1428c8e7a5d.pdf
- http://files.jodymorse.com/uploads/1/3/1/6/131606431/vufamakalozezan.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://cdn.shopify.com/s/files/1/0432/1237/4174/files/xumemuwijagili.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kupesuditijativerawepafu.pdf
- https://cdn.shopify.com/s/files/1/0431/0158/5570/files/57001336003.pdf
- https://cdn.shopify.com/s/files/1/0432/3999/7595/files/255383059.pdf
- https://cdn.shopify.com/s/files/1/0436/4884/3929/files/garikupizobup.pdf
- https://cdn.shopify.com/s/files/1/0431/0073/3596/files/5237711137.pdf
- https://cdn.shopify.com/s/files/1/0434/3303/3880/files/dezakub.pdf
- https://cdn.shopify.com/s/files/1/0435/6302/4542/files/91876508268.pdf
- https://cdn.shopify.com/s/files/1/0431/1249/7312/files/43274724213.pdf
- https://cdn.shopify.com/s/files/1/0433/4023/4902/files/zunojusoberitunevete.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/
- http://scripts.sil.org/OFL
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005776.binf3f168d266ef23c63f1b808bbcff8f726ebf6b6aa6be41ea76b68dd495083fd5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5776 | 4864 bytes |
font_01_sfnt_off000067fc.bin37cae03f1303d1e344f797148f3c75cbcf32718675984cfa00b97aa676af16b4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x67FC | 10816 bytes |
font_02_sfnt_off00008ce5.bin0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8CE5 | 4324 bytes |
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