MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/wix?keyword=matlab+for+beginners+a+gentle+approach+pdf'. This indicates the document's primary purpose is to redirect the user to malicious infrastructure, likely for further exploitation or phishing. The presence of a large number of external PDF links, many pointing to benign content, suggests a link farm SEO tactic to improve the ranking of the malicious redirector. The ML classifier also 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.cc/wix?keyword=matlab+for+beginners+a+gentle+approach+pdf
- https://static.usrfiles.com/ugd/b8c837_378f41b42f414a37bd4cc1379b8527a7.pdf
- https://static.usrfiles.com/ugd/b8c837_8f4a2c07e0b840fabca3136754149fbb.pdf
- https://static.usrfiles.com/ugd/80c1db_09eb414ee20d48f5826e19f5a7f151c7.pdf
- https://static.usrfiles.com/ugd/b8c837_c9a9fea88f0240649fe5c4050693dea6.pdf
- https://static.usrfiles.com/ugd/accd1f_6b643834f4214c02afac569610bf303a.pdf
- https://cdn.shopify.com/s/files/1/0433/8073/6150/files/bizhub_c308_manual.pdf
- https://cdn.shopify.com/s/files/1/0432/7332/2664/files/mirror_bones_blender.pdf
- https://cdn.shopify.com/s/files/1/0433/4393/7690/files/90961245056.pdf
- https://cdn.shopify.com/s/files/1/0435/9903/6573/files/the_secrets_of_underground_medicine_book.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dogudanivivakow.pdf
- https://cdn.shopify.com/s/files/1/0429/2437/6227/files/free_2007_mitsubishi_eclipse_owners_manual.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/
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00004458.bin1d2b143a2fa00dc07ba2eb0d706d0aa88054924a4c298e59946393d53f237fa0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4458 | 5348 bytes |
font_01_sfnt_off00005675.bine8376fcd5685db2a4124a4de106d521cf7ede5630673fa47f768e87543b8adec |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5675 | 8964 bytes |
font_02_sfnt_off0000750b.bin0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x750B | 4324 bytes |
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