MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, suggests a lure related to PDF manipulation. The presence of numerous external PDF links, many pointing to benign content, alongside the malicious redirector, indicates a potential link farm or SEO poisoning tactic to distribute malicious content. 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.com/wix?keyword=couper+1+page+pdf+en+2
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/b8c837_74b57338578845ef8460befcdf8554ad.pdf
- https://static.usrfiles.com/ugd/72b0e7_8da534243f9a4170931a17a4bc2d3718.pdf
- https://static.usrfiles.com/ugd/c5d40f_e9643fa412864628bd979bd8855973a7.pdf
- https://static.usrfiles.com/ugd/b9801a_84e15ab2593a4f88a7449cceb1fe151a.pdf
- https://static.usrfiles.com/ugd/4479ed_e4b0da2479504e4db61cfcd9e6b3b103.pdf
- https://static.usrfiles.com/ugd/16a96a_f8338ce4b82a448e82a6287da2ed8c69.pdf
- https://static.usrfiles.com/ugd/d4579c_1fe7a53fe5f942f98e61882553eedaca.pdf
- https://static.usrfiles.com/ugd/b8c837_fc7fd14f55584cf981a041432a1bc95e.pdf
- https://cdn.shopify.com/s/files/1/0430/8353/0407/files/wenaxos.pdf
- https://cdn.shopify.com/s/files/1/0447/9533/0717/files/63129132157.pdf
- https://cdn.shopify.com/s/files/1/0434/9011/5748/files/lx0-_103_study_guide.pdf
- https://cdn.shopify.com/s/files/1/0428/1883/0492/files/20018854379.pdf
- https://cdn.shopify.com/s/files/1/0432/5802/0000/files/75576290564.pdf
- https://static.usrfiles.com/ugd/b8c837_f4f2d3a8e00f4a29adb9ef6f804fe0dd.pdf
- https://static.usrfiles.com/ugd/c7a620_5bd05cb846f9491ea77d174995682d64.pdf
- https://static.usrfiles.com/ugd/3ab5ed_7f8b60ccb7594bf88d34d7a51f81444c.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_off00007c96.bin6784a6e73e17aba64f1207b43ca55eb78b363fa1fe6f05c24d533218617e7a0e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7C96 | 5088 bytes |
font_01_sfnt_off00008df9.binb596b16f4791fbe1b0af5738d2efc83a3cc97addc7b2d3fe223b7bdb087e736e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8DF9 | 12020 bytes |
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