MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous embedded links, many of which point to a redirector URL (https://ttraff.cc/wix?keyword=autodesk+inventor+student) that is flagged as malicious. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure the user to a malicious site. The presence of a large number of PDF links and the ML classifier's high confidence score further support a malicious intent, likely for phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 6
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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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Urgency / deadline lure low SE_URGENCY_LUREDocument contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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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=autodesk+inventor+student 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/b8c837_c970f4ca78c74065a324323e999182f0.pdfIn PDF document text
- https://static.usrfiles.com/ugd/bfbc46_750d0460daff4b758d4bcd96263ff646.pdfIn PDF document text
- https://static.usrfiles.com/ugd/bdeb4c_fe1f76a95686460eb7471e45246117ff.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vonabubabosutogoxofe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9279/5801/files/55773464465.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/8774/9525/files/muzino.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0047/1456/files/wexidi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/6533/5190/files/bolshevik_revolution_worksheet.pdfIn PDF document text
- https://static.usrfiles.com/ugd/913720_4d8e48b4bc3b47ac8fa9147c31b00b50.pdfIn PDF document text
- https://static.usrfiles.com/ugd/77941b_6c794da11ed44ef08e9c49fbe2025131.pdfIn PDF document text
- https://static.usrfiles.com/ugd/affb4a_4aa7edaeca7e495ca0c9b818361d2478.pdfIn PDF document text
- https://static.usrfiles.com/ugd/d01287_2b2aa72c0cda469ba0cd76d4c8894229.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_26cbeba4ddf04da9969db20fa7e30476.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/2870/9539/files/vupafifabubezogor.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6891/4838/files/myocardial_infarction_treatment.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1052/2277/files/semipazibufagatavobamufi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/9835/6392/files/redanimipevate.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
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006217.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6217 | 3936 bytes |
SHA-256: efc273c41ad1e37b94448463b08a94cb01c0bc64a4d5d7b750fdba9d3db9a05e |
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font_01_sfnt_off00007042.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7042 | 4688 bytes |
SHA-256: 8e3acd19fa85dd8bbb055000df4c61ea1495503de8d5e847d6886e07028c9210 |
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font_02_sfnt_off00008048.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8048 | 10084 bytes |
SHA-256: e84477d628367fcf22699f58d7d163518159247b0f09649037e170e4260945fa |
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