MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, many of which point to domains associated with link farms and redirectors, as indicated by the PDF_SEO_LINK_FARM and PDF_MALICIOUS_REDIRECTOR_LINK heuristics. The document body, though partially corrupted, contains text suggesting it is disguised as lecture notes to entice clicks on these malicious links. The ML_NYX_PDF_MALICIOUS heuristic further supports the malicious nature of this PDF.
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/pify?keyword=lecture+notes+on+calculus+of+variations+pdf
- http://turewano.jacketboosters.com/uploads/1/3/1/4/131407164/9282832.pdf
- http://files.hsiaoaiwang.com/uploads/1/3/2/6/132682615/7248143.pdf
- http://files.dechase.com/uploads/1/3/2/6/132695714/dofojuko.pdf
- https://cdn.shopify.com/s/files/1/0432/9881/6150/files/kixigidofu.pdf
- https://cdn.shopify.com/s/files/1/0435/5263/7091/files/38484473908.pdf
- https://cdn.shopify.com/s/files/1/0435/4726/3128/files/93242815803.pdf
- https://cdn.shopify.com/s/files/1/0432/0293/6992/files/causes_of_primary_amenorrhea.pdf
- https://cdn.shopify.com/s/files/1/0437/1644/4315/files/togajugabafezitoxit.pdf
- https://cdn.shopify.com/s/files/1/0433/6546/6270/files/candombl_de_angola_fundamentos.pdf
- https://cdn.shopify.com/s/files/1/0428/2135/3635/files/instrumentation_engineering_interview_questions.pdf
- https://cdn.shopify.com/s/files/1/0431/3733/5464/files/pilolunupexenapelemuxefe.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32829552166.pdf
- https://cdn.shopify.com/s/files/1/0451/0570/9219/files/bescherelle_italien_le_vocabulaire.pdf
- https://doi.org/10.1142/9789813144699_fmatterhttps://doi.org/10.1142/9789813144699_0001https://doi.o
- 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 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000524a.binab092491a98dca88dcbc43b40feebc71ae002e9c149c0d69ec7f481b7433e712 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x524A | 5148 bytes |
font_01_sfnt_off000063df.binbf4e26ed4dd7501ada4758a4ae01a389992ca9293d4ba6e8c714eee277fadd50 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x63DF | 9716 bytes |
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