MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF document contains numerous embedded links, with the primary link directing to a known malicious redirector. The document body, though obfuscated, suggests an attempt to disguise malicious links as an educational worksheet. The ML classifier strongly indicated maliciousness, and the presence of a link farm further supports a malicious intent for traffic redirection or malware distribution.
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.com/wb?keyword=simultaneous%20equation%20elimination%20worksheet
- http://files.fenianfear.com/uploads/1/3/0/7/130739069/2003883.pdf
- http://files.thefashionanalyst.com/uploads/1/3/1/3/131383624/wezunawe.pdf
- http://files.milegion-legacyrun.org/uploads/1/3/1/4/131409385/347348cfe8.pdf
- http://files.hound47.com/uploads/1/3/1/3/131398367/mimikosekud-logekefa-zosem.pdf
- http://files.pmawm.com/uploads/1/3/0/7/130738933/lesutubivutuwi_tekivegirole_gagujapodunen.pdf
- http://files.vthcv.org/uploads/1/3/1/4/131406606/1110088.pdf
- http://files.sharidellapenna.com/uploads/1/3/0/7/130776567/xaroradiki_radebodujaze_gozome.pdf
- https://jodopeku.files.wordpress.com/2020/07/48562935946.pdf
- https://gunamitiluj.files.wordpress.com/2020/06/96894283967.pdf
- https://fiwasaserop.files.wordpress.com/2020/06/64235287242.pdf
- https://nafufaborur.files.wordpress.com/2020/07/98639542262.pdf
- https://rifilaru.files.wordpress.com/2020/06/zelolawadabawokope.pdf
- https://fusikazisome.files.wordpress.com/2020/06/wenubiwipesiwumilifobopap.pdf
- https://navofifur.files.wordpress.com/2020/06/kajojawugilokonuga.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/voriwatovetizejewadodo.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/27482348981.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ziwodukujaluladiludu.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 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000089dc.bin334445f299ef399e801bd11c8c66b69401ece62391be8eca0df56a8fb98c78c2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x89DC | 5192 bytes |
font_01_sfnt_off00009b5a.bin367e8b1027ebff24090e39049f3cca6797f89bba194e33e4f2afb6faddbd8334 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9B5A | 13260 bytes |
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