MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains embedded links that redirect to a malicious domain, identified by heuristics as a redirector and part of a link farm. The document body, though heavily obfuscated, contains the primary redirect URL and references to other PDF files, suggesting a phishing or scam attempt disguised as educational material. The ML classifier strongly indicates maliciousness.
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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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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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=composite+functions+worksheet+igcse In PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://static.usrfiles.com/ugd/a1fb72_396d46e68a244bd59bae198e22a8890c.pdfIn PDF document text
- https://static.usrfiles.com/ugd/cb4a18_f4f4c87488714b33977d5eecd627cdb9.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_53686dd539794b55860797b7d42ce3b6.pdfIn PDF document text
- https://static.usrfiles.com/ugd/bfbc46_40fb62c9515048eda17e392549fd60dc.pdfIn PDF document text
- https://static.usrfiles.com/ugd/902d29_20316faeeae446ffa5bf03464de346c6.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_dc9f5a679e1948a0bc660624708cd1f4.pdfIn PDF document text
- https://static.usrfiles.com/ugd/5ecadc_b8983508d4c4490a844a3f09e3d70781.pdfIn PDF document text
- https://static.usrfiles.com/ugd/856cea_5d6c0a214621451194efb1bcb7c2e9f4.pdfIn PDF document text
- https://static.usrfiles.com/ugd/3794ad_b9a34127ab0546e192d313649a991aa5.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7507/5225/files/kavenibodupeduvu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/5451/1766/files/membrane_transport_concept_map_answer_key.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/8922/9979/files/zikexazu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8862/5302/files/1202753303.pdfIn PDF document text
- https://static.usrfiles.com/ugd/5b5da7_2522f561435b43c39147694f6a1e5712.pdfIn PDF document text
- https://static.usrfiles.com/ugd/4b874d_e0c6e4181e1e44b284e45b7709dc7c9c.pdfIn PDF document text
- https://static.usrfiles.com/ugd/9e53d4_f0e2438738e147a1b117a7c8c0744efe.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005ba9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5BA9 | 5248 bytes |
SHA-256: d57ddf4e9afcd60ad9183230781e2a51d939cde0f7953f6b0b5adacede01fbce |
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font_01_sfnt_off00006d6d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6D6D | 3128 bytes |
SHA-256: 7a84c6cf4f46d4bac8fb6ba896b1cdf686c60a6b9912cc82b79a416172af7d16 |
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font_02_sfnt_off00007a2e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7A2E | 14100 bytes |
SHA-256: 29700e17337ab727291ddadd2d2c3f69a51f67ea66471d8da437a631b6e01f65 |
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font_03_sfnt_off0000a73a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA73A | 16556 bytes |
SHA-256: 04da5c4f3502a20cc87988b67df201e15d3ee20f8554056e7efcaa25b0d9ec54 |
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