MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. One prominent link, disguised as a 'physical science textbook answer key', leads to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the same lure URL, reinforcing the social engineering attempt.
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.link/wix?keyword=physical+science+textbook+answer+key
- http://wivetife.ginetteandmichaeladopt.com/uploads/1/3/0/7/130739393/4272448.pdf
- http://fajemu.arcataautocenter.com/uploads/1/3/1/8/131857782/welerakamamore-fakezizo-xuviv.pdf
- http://duvaf.sugarvedelmiesmunkavedelmikft.com/uploads/1/3/1/8/131859527/gaved_lofimedokow_tiwunadise_kabiruwakalupen.pdf
- http://finof.mycountyparks.org/uploads/1/3/1/1/131164319/ragom-xoser.pdf
- http://files.jackdogproductions.com/uploads/1/3/1/6/131637104/b34816d.pdf
- http://zitug.ormistoncollegemusic.com/uploads/1/3/1/6/131607254/fagutuwux.pdf
- http://wuduju.kupskorner.com/uploads/1/3/1/4/131454762/nozixapeninogege.pdf
- http://gezigatoj.newarkvalleychamber.com/uploads/1/3/2/6/132681947/rezovelipu.pdf
- https://3543ef8a-762b-4877-85ca-e5e49b8b6d61.filesusr.com/ugd/479fa9_fc3a0d0cb31c4128ab9924a677a0e663.pdf?index=true
- https://32a7813d-331e-4241-b7c2-caa746d9d9f2.filesusr.com/ugd/9c0842_4623f31d58ba429cbe3a3acc195b70a5.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_off00004d8a.bin1085bd74cae9a992b3b31a7819bde4ca70a63d8778534b855f0d4c9f67d3aa8f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4D8A | 5352 bytes |
font_01_sfnt_off00005fd8.binc45194b122dfa10b7bd78753b934a500dfa2cd403f5bde78179f9b53b50d59a6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5FD8 | 10376 bytes |
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