MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a heuristic firing for malicious redirector links, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains the URL and appears to be a lure for a 'course syllabus template'. The presence of numerous external PDF links, many benign but one identified as a redirector, suggests a link farm or SEO poisoning tactic to distribute malicious content. The ML classifier also strongly indicated maliciousness.
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=course+syllabus+template+pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/f63f29_ce566984cb7a4955ab6ba8c0fde20efe.pdf
- https://static.usrfiles.com/ugd/0779a3_4e86f18c80f24de8a55e4db981e79dc2.pdf
- https://static.usrfiles.com/ugd/f80014_8920a136d70b46eb9e6572d1c1830ed5.pdf
- https://cdn.shopify.com/s/files/1/0431/9464/6689/files/15306284215.pdf
- https://cdn.shopify.com/s/files/1/0437/3318/8762/files/harcourt_phonics_grade_1.pdf
- https://cdn.shopify.com/s/files/1/0427/4746/1788/files/6363806063.pdf
- https://cdn.shopify.com/s/files/1/0431/7252/8292/files/bachelor_party_full_movie_tamilrockers.pdf
- https://static.usrfiles.com/ugd/b8c837_3905be4b457444fa9f0e98a4d2f747d2.pdf
- https://static.usrfiles.com/ugd/f0e51d_e71f5ef19ff145c3b88043345312a936.pdf
- https://cdn.shopify.com/s/files/1/0434/3732/6488/files/37982298199.pdf
- https://cdn.shopify.com/s/files/1/0451/6649/3845/files/45651406080.pdf
- https://cdn.shopify.com/s/files/1/0432/8331/6891/files/zezejuxilida.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_off00006007.bin9ec400b38ac552103daacf186d1e69971b2b6abbb74f6a47cf2e23ff9f597b73 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6007 | 5332 bytes |
font_01_sfnt_off00007213.bin196e93feccc184447c84c7a17f955402943208e073565e066aebeaeb035855e2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7213 | 10200 bytes |
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