MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a significant number of embedded links pointing to various PDF documents, indicating a link farm. One critical heuristic identified a link to known malicious redirector infrastructure. The ML classifier also strongly flagged this PDF as malicious. The embedded document body text is largely unreadable but contains a URL that aligns with the observed malicious redirector.
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.club/wix?keyword=worksheet+%25237+commissions+answer+key
- http://zalepo.alabamatransportation.org/uploads/1/3/1/3/131381787/dowexu-sawekizaser.pdf
- http://files.thestandardcanvas.com/uploads/1/3/0/9/130969808/kavuvopawunedag_daxuzute_rilelenile.pdf
- http://files.midwestdressage.org/uploads/1/3/1/4/131453867/dilibarofaxi_bazemunoruw.pdf
- https://55f8172b-09b5-47c8-9949-e9384cbe7aa3.filesusr.com/ugd/ce4b7c_e0d64b7c1178435aab3245ba92ac3706.pdf?index=true
- https://cdn.shopify.com/s/files/1/0429/9191/1066/files/complete_pet_student_s_book_vk.pdf
- https://cdn.shopify.com/s/files/1/0433/3161/6923/files/bazekusuwir.pdf
- https://cdn.shopify.com/s/files/1/0428/1440/6823/files/41878544838.pdf
- https://9bf403e5-59ab-4bd9-86b3-df1fbea23858.filesusr.com/ugd/e7e4a0_9c292ff9219f412a9395c0692d324970.pdf?index=true
- https://f7c32336-9183-4774-ad62-d59c6dfb1c56.filesusr.com/ugd/e6e573_c96ca6d71f3242f09b769a86e3f8e275.pdf?index=true
- https://e9f98cce-9315-403b-b8fd-f314b1f7c402.filesusr.com/ugd/cc15ef_7effc89d2f0640889a608d05ff4e66c1.pdf?index=true
- https://03916d10-1e80-4ef7-ab59-d0693fe75f39.filesusr.com/ugd/c1de29_33f8664d9a374e87bff5311ca7399d88.pdf?index=true
- https://d5032517-af5d-4905-9d99-677929b395bf.filesusr.com/ugd/868401_7db44f503955458fb111f14cd98c7374.pdf?index=true
- 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_off000078fb.bin912de047f9d944948e14f56c8d2131f26ecc8b9b94e75b7736575df8676d2a94 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x78FB | 4600 bytes |
font_01_sfnt_off000088a2.bin992495f03ab66cacd7ec1e28effcba2f5d59ed43b09b1e94f53fe2b37f301ba1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x88A2 | 12792 bytes |
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