MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains embedded links, one of which is a redirector pointing to a URL containing 'android 9 api changes', suggesting a lure for users interested in technical information. The PDF also hosts a large number of other PDF links, indicating a potential link farm or SEO manipulation tactic. The ML classifier strongly flagged this PDF as malicious, and the presence of redirector links further supports malicious intent.
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.link/wix?keyword=android+9+api+changes
- http://files.obmghk.com/uploads/1/3/1/4/131437711/8056672.pdf
- http://katavu.thehopkinsgallerystore.com/uploads/1/3/1/8/131872055/344833.pdf
- http://files.sathiavanee-veeramoothoo.com/uploads/1/3/1/8/131871891/jidutemepupaz.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0439/1193/8216/files/22920809498.pdf
- https://cdn.shopify.com/s/files/1/0437/4475/5866/files/15284780627.pdf
- https://cdn.shopify.com/s/files/1/0462/7929/5136/files/sutarebew.pdf
- https://cdn.shopify.com/s/files/1/0429/6402/5493/files/linkedin_logo_usage_guidelines.pdf
- https://cdn.shopify.com/s/files/1/0433/6762/8950/files/pukokix.pdf
- https://cdn.shopify.com/s/files/1/0481/3691/3049/files/emergency_action_plan_checklist.pdf
- https://cdn.shopify.com/s/files/1/0434/5040/0928/files/gujezof.pdf
- https://static.usrfiles.com/ugd/a7074a_ccf1c023645d458996ca1d1d809a5bcc.pdf
- https://static.usrfiles.com/ugd/cf5aa9_59fefbe8e76040ae95811edfaad187f7.pdf
- https://static.usrfiles.com/ugd/1cc777_24437f49eb5242e88d590c14ad385968.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 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000b631.bin164ffcc4a3ae23839566ef4161686fcf9a12ed95c874d9161b0c86e982dedf18 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB631 | 5448 bytes |
font_01_sfnt_off0000c8b5.binf8752ee86815ab31dc45a62b8ed7c5806cd383eba0ea088fc5be6373f2959767 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC8B5 | 16488 bytes |
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