MALICIOUS
162
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised as a download for '2018 first aid usmle'. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this malicious intent. Additionally, the PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, suggesting a link farm or SEO abuse tactic. The ML_NYX_PDF_MALICIOUS classifier strongly supports the malicious verdict.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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/wix?keyword=download+2018+first+aid+usmle
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0432/4861/5579/files/gexurulubuzutevataz.pdf
- https://cdn.shopify.com/s/files/1/0438/7844/9307/files/states_of_matter_worksheet_high_school.pdf
- https://cdn.shopify.com/s/files/1/0433/4275/8053/files/wifaweribow.pdf
- https://cdn.shopify.com/s/files/1/0431/1996/8417/files/1160576225.pdf
- https://cdn.shopify.com/s/files/1/0434/7192/9496/files/kijafenovedogawev.pdf
- https://cdn.shopify.com/s/files/1/0435/2786/4469/files/23568764634.pdf
- https://cdn.shopify.com/s/files/1/0437/4324/8533/files/fomatadelowijinowu.pdf
- https://cdn.shopify.com/s/files/1/0437/5671/6186/files/descargar_driver_de_dazzle_digital_video_creator-80.pdf
- https://cdn.shopify.com/s/files/1/0461/9662/1462/files/joxaluxari.pdf
- https://cdn.shopify.com/s/files/1/0431/1757/6354/files/37195944301.pdf
- https://cdn.shopify.com/s/files/1/0429/1559/4393/files/pokefopesokugubori.pdf
- https://cdn.shopify.com/s/files/1/0429/0733/6857/files/fofupekejaki.pdf
- https://cdn.shopify.com/s/files/1/0440/0057/5638/files/obs_open_broadcaster_software.pdf
- https://cdn.shopify.com/s/files/1/0432/4681/3344/files/75695279616.pdf
- https://cdn.shopify.com/s/files/1/0431/9910/3136/files/31820751451.pdf
- https://static.usrfiles.com/ugd/b8c837_78d89ff0d1164e3c93687683e06fb390.pdf
- https://static.usrfiles.com/ugd/b8c837_b899be96b31248479493df062aafba81.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://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
- http://scripts.sil.org/OFL
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
stream_005_off00009e7b.bin89dfe6ea894054ec10894f9d17ccd03ceec2b6961fcd7cef4f9c011d2ae3b09d |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x9E7B | 25400 bytes |
font_00_sfnt_off000068d4.bin611d6c8a704080968fe24097f1a7f428f1ab238898d565e2c24244d86b8a9c2b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x68D4 | 5664 bytes |
font_01_sfnt_off00007c19.bin85bc81b2af8f625902f55cc4b58d2672303caa607d2582f84b5e40065fc70a9c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7C19 | 10000 bytes |
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