MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised as a 'balancing chemical equations worksheet'. This indicates a social engineering attempt to trick the user into clicking the link. The ML classifier strongly flagged this PDF as malicious, and the presence of a link farm further supports malicious intent. No scripts were extracted, but the primary attack vector appears to be the malicious URL embedded within the document.
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/pify?keyword=balancing+chemical+equations+worksheet+tes
- http://wukuxe.dashingkennel.com/uploads/1/3/2/6/132682883/2478161.pdf
- http://files.yogawithminta.com/uploads/1/3/2/7/132710748/2190998.pdf
- http://files.wellingtonartgallery.com/uploads/1/3/0/9/130969572/6511158.pdf
- https://cdn.shopify.com/s/files/1/0440/4061/8134/files/aims_and_objectives_of_education_in_pakistan.pdf
- https://cdn.shopify.com/s/files/1/0428/8364/5599/files/29402888948.pdf
- https://cdn.shopify.com/s/files/1/0433/0697/5382/files/mijobotatevigemejoji.pdf
- https://cdn.shopify.com/s/files/1/0434/1674/8188/files/82113416922.pdf
- https://cdn.shopify.com/s/files/1/0433/8273/5006/files/93082795850.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38684703775.pdf
- https://cdn.shopify.com/s/files/1/0433/8706/0375/files/42122275597.pdf
- https://cdn.shopify.com/s/files/1/0432/1217/7563/files/adobe_reader_software_free_download_for_pc.pdf
- https://cdn.shopify.com/s/files/1/0436/9101/6347/files/basel_3_norms.pdf
- https://cdn.shopify.com/s/files/1/0432/2512/0927/files/cells_of_immune_system_student_worksheet_answers.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000040fe.bin9098f8e9394693454bd3d98bf182df57f8ba17cfe55aef41034b5cee496ee115 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x40FE | 5428 bytes |
font_01_sfnt_off0000534b.bin4effd99dff594005f44c60e2333d01f92d24b5241cb5ee69b22cb92cc99751a3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x534B | 8952 bytes |
font_02_sfnt_off000071c3.bin05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x71C3 | 4324 bytes |
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