MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a large number of embedded links, many of which point to a link farm designed to redirect users to malicious infrastructure. The primary malicious URL identified is a redirector that appears to be part of a SEO spam campaign. The ML classifier also strongly indicated maliciousness.
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.ru/wb?keyword=openclassroom%20pdf%20php
- http://sinovofeb.bentail.com/uploads/1/3/0/7/130775379/1020415.pdf
- http://files.chrislilly.tv/uploads/1/3/0/8/130814078/1329bc08151883c.pdf
- http://files.etegl.org/uploads/1/3/1/1/131164574/604551.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0431/1059/6765/files/57282297096.pdf
- https://cdn.shopify.com/s/files/1/0434/8212/0357/files/83656553473.pdf
- https://cdn.shopify.com/s/files/1/0427/8091/7926/files/kativuzokeritatoxigisibu.pdf
- https://cdn.shopify.com/s/files/1/0428/9232/9119/files/64449689855.pdf
- https://cdn.shopify.com/s/files/1/0431/7508/4193/files/ruxurelaza.pdf
- https://cdn.shopify.com/s/files/1/0448/3494/7233/files/fitbit_hr_charge_manual.pdf
- https://cdn.shopify.com/s/files/1/0430/4217/7181/files/equipped_for_reading_success_david_kilpatrick.pdf
- https://cdn.shopify.com/s/files/1/0431/8422/6453/files/lejepegutezaxumabojokimir.pdf
- https://cdn.shopify.com/s/files/1/0439/5103/0430/files/discuss_the_capital_structure_theory.pdf
- https://cdn.shopify.com/s/files/1/0435/6397/4805/files/birimot.pdf
- https://cdn.shopify.com/s/files/1/0437/2201/4871/files/8714698555.pdf
- https://cdn.shopify.com/s/files/1/0435/2403/0619/files/dejejuzakusebe.pdf
- https://cdn.shopify.com/s/files/1/0432/4897/6027/files/bodurojujovanutowonitu.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/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00004e5d.binbfea43de20f07f0fed47b33b1fd9ac24f902366187d9a4cad4feec7ebdd79e2b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4E5D | 5424 bytes |
font_01_sfnt_off00006094.bin64262244edea1403935203c36a51881c82f1c67ff8269644b79ef05bc37a2aa9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6094 | 10728 bytes |
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