MALICIOUS
128
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.001 User Execution: Malicious Link
T1059.001 PowerShell
The PDF contains a link that redirects to a malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to 'usmle step 1 biochemistry lecture notes pdf' and the malicious URL itself, suggesting a lure for educational materials. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, likely for SEO manipulation or to distribute malicious content. No scripts were extracted from this sample.
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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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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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=usmle+step+1+biochemistry+lecture+notes+pdf
- http://files.nighthawkgolfcenter.com/uploads/1/3/0/7/130775350/muritizok_nidaxoxav.pdf
- http://files.eseryel.com/uploads/1/3/1/8/131857315/guxakatevudidi.pdf
- http://files.appliedmicronanolab.com/uploads/1/3/1/4/131411688/04d0cd9a.pdf
- https://cdn.shopify.com/s/files/1/0440/5254/5701/files/d_d_3._5_phb.pdf
- https://cdn.shopify.com/s/files/1/0431/7272/4897/files/31578321179.pdf
- https://cdn.shopify.com/s/files/1/0430/4653/5322/files/jutibuzutomilibubadagobom.pdf
- https://cdn.shopify.com/s/files/1/0433/9462/9786/files/air_pollution_project.pdf
- https://cdn.shopify.com/s/files/1/0430/5167/9898/files/afficheur_lcd_i2c.pdf
- https://cdn.shopify.com/s/files/1/0440/7577/8198/files/playboy_magazine_download_free.pdf
- https://cdn.shopify.com/s/files/1/0434/5928/1048/files/84362433345.pdf
- https://cdn.shopify.com/s/files/1/0437/6769/3474/files/who_s_afraid_of_virginia_woolf_script.pdf
- https://cdn.shopify.com/s/files/1/0432/0896/6301/files/rawudexawavix.pdf
- https://cdn.shopify.com/s/files/1/0433/4505/1797/files/pernicious_anemia_pathophysiology.pdf
- https://cdn.shopify.com/s/files/1/0433/2971/6374/files/kagitoba.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_off00009fa1.binf2076fa5af714baefcdf86b649937b80f9df9a891447b28d8c8d43a7f208b39d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9FA1 | 5472 bytes |
font_01_sfnt_off0000b21b.bine1e83a383e7c8ee5f25e0874dc74b478692e50d4ae22950c1905590a003d45f1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB21B | 10604 bytes |
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