MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a link farm pointing to numerous external PDFs, with one link specifically leading to a known malicious redirector. The document body, though partially corrupted, contains text related to exam results and the malicious URL, suggesting a lure to trick users into clicking the link. The ML classifier strongly indicated maliciousness, and the presence of a redirector link confirms a malicious intent to lead the user to harmful content.
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.cc/pify?keyword=bstc+result+2018+rajasthan
- http://files.zhugenyang.com/uploads/1/3/1/4/131438471/raxupapenijum.pdf
- http://files.johnknoxhouston.org/uploads/1/3/1/8/131856664/a1234c.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0430/7674/7413/files/absceso_en_la_cara.pdf
- https://cdn.shopify.com/s/files/1/0434/7078/2614/files/software_quality_assurance_plan_template.pdf
- https://cdn.shopify.com/s/files/1/0430/3791/7345/files/3298920869.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/test_1879eb6a-339e-4d45-a409-571cd94a4742.pdf?v=1594212285
- https://cdn.shopify.com/s/files/1/0435/6289/3471/files/lomipofurunoxarajuxi.pdf
- https://cdn.shopify.com/s/files/1/0445/9141/5460/files/kudim.pdf
- https://cdn.shopify.com/s/files/1/0428/6971/9196/files/girozisezukixaje.pdf
- https://cdn.shopify.com/s/files/1/0438/4522/2557/files/classic_wow_lucky_charm.pdf
- https://cdn.shopify.com/s/files/1/0427/6482/8838/files/55085327349.pdf
- https://cdn.shopify.com/s/files/1/0433/3246/8890/files/35437569893.pdf
- https://cdn.shopify.com/s/files/1/0429/6966/1589/files/rodexubugi.pdf
- https://cdn.shopify.com/s/files/1/0440/1060/2661/files/butas.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_off000072a4.bin9d0ab8d9f0a60ddc7f9cc8dba137d94179e121a174f1de1987b8497cf001e18b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x72A4 | 5532 bytes |
font_01_sfnt_off0000856e.bine867cdda106aaa9d76a8541d39d183f46e296c3d3c10e73501430fbfe13bd220 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x856E | 12556 bytes |
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