MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a heuristic firing for linking to known malicious redirector infrastructure, specifically a URL related to 'free scientific books download sites'. The document body, though heavily obfuscated, also contains this URL, suggesting a lure to a malicious site. The presence of numerous external PDF links, many pointing to benign Shopify domains, indicates a link farm strategy, likely to improve SEO for the malicious redirector.
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/wix?keyword=free+scientific+books+download+sites
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0430/0334/7097/files/20977702849.pdf
- https://cdn.shopify.com/s/files/1/0431/8865/0142/files/36555814510.pdf
- https://cdn.shopify.com/s/files/1/0431/0935/1578/files/skillet_comatose_free_mp3_download.pdf
- https://cdn.shopify.com/s/files/1/0435/2750/4031/files/49108333780.pdf
- https://static.usrfiles.com/ugd/b8c837_f955ff3a70fb4d828141dce74cdfb3be.pdf
- https://static.usrfiles.com/ugd/b8c837_7c190fe43cec48ebbce9dadd8e72c2b7.pdf
- https://static.usrfiles.com/ugd/b8c837_9ff849e2fa594375bd2db1295fb89e1b.pdf
- https://static.usrfiles.com/ugd/b8c837_d08cb33ae5f14941bfc7375b4b153197.pdf
- https://static.usrfiles.com/ugd/b8c837_9a0b65be31d64ae7ba26bb5e301b4ac2.pdf
- https://static.usrfiles.com/ugd/b8c837_38797651f90b4dfa9a9e69d79ca633b8.pdf
- https://static.usrfiles.com/ugd/b8c837_b139f2e832534566ba572c359f306460.pdf
- https://static.usrfiles.com/ugd/b8c837_350d0a29eb0c4a69bdebba7ef5a12e24.pdf
- https://static.usrfiles.com/ugd/b8c837_cef848f695c84d7db82e2cb9ca91ea3c.pdf
- https://cdn.shopify.com/s/files/1/0440/7898/9462/files/demande_d_attestation_de_salaire_cnss.pdf
- https://cdn.shopify.com/s/files/1/0430/1714/2433/files/99484582258.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_off0000650f.bin659e30896b077431105af8b3923a66863e5e0f98c6d1a206caf463b8b00f4474 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x650F | 5268 bytes |
font_01_sfnt_off00007719.bin58bb11f91a5fcd91b1a3143bbc03d942722b7fa28fccb99e2df3900a7b1820ff |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7719 | 10064 bytes |
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