MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a deceptive lure, presenting itself as a 'Chm file reader' to encourage clicks on embedded links. One prominent link, 'https://ttraff.cc/pify?keyword=chm+file+reader', points to known malicious redirector infrastructure. The document also hosts a large number of other PDF links, suggesting a link farm or a method to obscure the true malicious destination. The ML classifier strongly flagged this PDF as malicious.
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=chm+file+reader
- http://files.paqu.org/uploads/1/3/1/8/131871894/vibofukupu_ruzererijolibij.pdf
- http://vezizotej.djfndctn.net/uploads/1/3/1/6/131606636/2784566.pdf
- http://files.graciesgowns.org/uploads/1/3/0/7/130776490/9a18ec6dc46a4.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0430/2657/9610/files/mawakamutepiwugiwokiv.pdf
- https://cdn.shopify.com/s/files/1/0435/5896/1315/files/derifunizivewajalixokodag.pdf
- https://cdn.shopify.com/s/files/1/0428/6644/2406/files/jekod.pdf
- https://cdn.shopify.com/s/files/1/0434/9739/0244/files/xetitijujedanos.pdf
- https://cdn.shopify.com/s/files/1/0430/5934/7618/files/how_to_delete_all_likes_on_twitter.pdf
- https://cdn.shopify.com/s/files/1/0437/0818/6792/files/nda_math_syllabus_download.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xakisone.pdf
- https://cdn.shopify.com/s/files/1/0434/3264/0679/files/19655690999.pdf
- https://cdn.shopify.com/s/files/1/0431/7495/3120/files/19940759574.pdf
- https://cdn.shopify.com/s/files/1/0434/5410/3713/files/xekajusidudefonetotiduj.pdf
- https://cdn.shopify.com/s/files/1/0433/5324/3816/files/binary_to_decimal_converter_with_solution.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_off0000654c.bin8f91139d7a8bd4367d76ca2579ec04bfcc00fe5b9b278741d45fbaeb7af56d55 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x654C | 4876 bytes |
font_01_sfnt_off000075ad.bin2b68c33075aa8e7851180726ed14e13f60616c63fabfd5d906250c7b3323cb32 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x75AD | 10428 bytes |
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