MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The ML classifier also strongly flagged this PDF as malicious. The primary malicious IOC is the redirector URL, which likely leads to a further stage of the attack. The document body contains metadata that appears to be obfuscated or corrupted.
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=acrobat+amtlib.+dll
- http://files.forcebrewery.com/uploads/1/3/2/6/132695200/5bb2eb6533fe68d.pdf
- http://files.deborahmilesdesign.co.uk/uploads/1/3/2/8/132815054/kikufavosapa_wumidodeje_mitulu_nikaluwexur.pdf
- http://paxajet.oxfordstation.pl/uploads/1/3/0/8/130814328/98556.pdf
- http://files.malawiecosolutions.com/uploads/1/3/1/4/131408170/1605936.pdf
- https://cdn.shopify.com/s/files/1/0430/3316/5986/files/76752722972.pdf
- https://cdn.shopify.com/s/files/1/0463/2461/3275/files/biographical_data_template.pdf
- https://cdn.shopify.com/s/files/1/0437/7244/4823/files/gujovakevowin.pdf
- https://cdn.shopify.com/s/files/1/0435/6807/0815/files/manipulative_psychology_101.pdf
- https://cdn.shopify.com/s/files/1/0431/6758/0322/files/88448197876.pdf
- https://cdn.shopify.com/s/files/1/0431/6728/5408/files/bulozimodijovomujuj.pdf
- https://cdn.shopify.com/s/files/1/0427/9461/4940/files/siwes_report_on_computer_maintenance.pdf
- https://cdn.shopify.com/s/files/1/0430/9906/2426/files/ctet_2020_syllabus_download.pdf
- https://cdn.shopify.com/s/files/1/0432/0998/2107/files/23672320043.pdf
- https://cdn.shopify.com/s/files/1/0430/3113/4365/files/fevupade.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_off0000653d.bin6f230dfbd4c15c9e16a3dea175ef8eb643d06464c8b2aba9d465d911df4d42fc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x653D | 5068 bytes |
font_01_sfnt_off00007658.bind949c8ece70fa1bd17a15f60374fa8354ec6a27a8e1770a0d9ddf0aa7c6b47f2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7658 | 13100 bytes |
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