MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains embedded links, with one prominent URL identified as a malicious redirector. The document body, though heavily obfuscated, contains text suggesting it is related to 'bksb english diagnostic answers', indicating a lure to trick users into clicking the malicious link. The ML classifier also strongly flagged this PDF as malicious.
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=bksb+english+diagnostic+answers
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/0bcf16_1f7fa7cb8a3c4afdabef5fde83a35aef.pdf
- https://static.usrfiles.com/ugd/4f270c_176244fe62fd4e3a9bc10429a82bd5f8.pdf
- https://static.usrfiles.com/ugd/12dc78_30b628c58ee24ef1b74d2dd860017937.pdf
- https://static.usrfiles.com/ugd/c75f60_d69039c53a374314af1f261ea7291a8c.pdf
- https://cdn.shopify.com/s/files/1/0432/3134/6856/files/39143346261.pdf
- https://cdn.shopify.com/s/files/1/0428/4419/2935/files/xonifovoxeveban.pdf
- https://cdn.shopify.com/s/files/1/0435/9805/3539/files/rijududodabikitated.pdf
- https://cdn.shopify.com/s/files/1/0434/0298/5637/files/rufobusomu.pdf
- https://cdn.shopify.com/s/files/1/0435/7269/1099/files/kawasaki_disease_guidelines_uk.pdf
- https://cdn.shopify.com/s/files/1/0437/0923/5353/files/asciidoc_page_break.pdf
- https://cdn.shopify.com/s/files/1/0429/8535/7463/files/54114061528.pdf
- https://cdn.shopify.com/s/files/1/0437/1356/0727/files/zuvozakidixanelabenevi.pdf
- https://cdn.shopify.com/s/files/1/0432/5467/7668/files/askep_kasus_bblr.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_off000076fe.binaf3f172686a8c238cc01ecb39e81da4a1c0065eb40f7ae525463da429a66733c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x76FE | 5544 bytes |
font_01_sfnt_off000089e9.bin98b8c2ce8dff6cd9647d0e9ee625cc83fdf6b1b4bbbecdfe0e3a434ad171e186 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x89E9 | 10024 bytes |
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