MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to 'ocr a level biology textbook answers pdf' and includes the primary malicious URL. This suggests a lure to a malicious site disguised as a search result or document repository. No scripts were extracted, limiting the analysis of further payload delivery.
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=ocr%20a%20level%20biology%20textbook%20answers%20pdf
- http://files.dndamsels.com/uploads/1/3/0/7/130775551/3863589.pdf
- http://files.mentalhealthjunkie.com/uploads/1/3/1/4/131407183/670c2.pdf
- http://files.glenburniequicktaxi.com/uploads/1/3/0/7/130776413/zisivunu_pubifiz.pdf
- https://cdn.shopify.com/s/files/1/0433/4750/9416/files/bojibujujiwu.pdf
- https://cdn.shopify.com/s/files/1/0434/5154/7800/files/tejiwulabi.pdf
- https://cdn.shopify.com/s/files/1/0436/2331/7662/files/dutubekerivasedulare.pdf
- https://cdn.shopify.com/s/files/1/0433/4557/6088/files/zopebaxixatewoxekiburuzo.pdf
- https://cdn.shopify.com/s/files/1/0430/9201/7305/files/91106021931.pdf
- https://cdn.shopify.com/s/files/1/0438/8388/8808/files/marc_benioff_book_behind_the_cloud.pdf
- https://cdn.shopify.com/s/files/1/0428/0742/7238/files/fodozetafazitajurozibep.pdf
- https://cdn.shopify.com/s/files/1/0433/2378/5370/files/lofegugegedumixujuzedo.pdf
- https://cdn.shopify.com/s/files/1/0435/5896/1315/files/mojamige.pdf
- https://cdn.shopify.com/s/files/1/0440/8626/3960/files/markdown_blank_line.pdf
- https://cdn.shopify.com/s/files/1/0428/6477/1238/files/math_algebra_rules_pdf.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_off000040df.bin5fcaa28ecf3abe1e0ab1256028727d0769342bfb83f2a8694043a42774d4a500 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x40DF | 5664 bytes |
font_01_sfnt_off0000544d.binfed8916ca35bbfd4caf27e07d5a9884ce0194d9f6e8414f8e72e6eaf2612873f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x544D | 9012 bytes |
font_02_sfnt_off0000730b.binad623bc7c681097dfa1224999cf6cc6072d3ca9a137655dc1129b0261f0b357c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x730B | 4324 bytes |
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