MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains embedded URLs, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for a textbook download, directing users to the malicious URL. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO manipulation tactic to distribute the malicious PDF.
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/pify?keyword=blitzer+college+algebra+6th+edition+pdf+download
- http://files.iditarod100.org/uploads/1/3/1/3/131379039/b7de9.pdf
- http://files.breatheserenity.com/uploads/1/3/1/4/131406544/9072758.pdf
- http://files.rpsings.com/uploads/1/3/1/6/131606003/335d86abe42a33d.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0430/9227/9460/files/lolokuxerov.pdf
- https://cdn.shopify.com/s/files/1/0430/0324/8803/files/english_descriptive_writing.pdf
- https://cdn.shopify.com/s/files/1/0428/6912/9372/files/tujipusovokexumi.pdf
- https://cdn.shopify.com/s/files/1/0430/0118/4417/files/39408190972.pdf
- https://cdn.shopify.com/s/files/1/0433/0009/4112/files/cheat_engine_6._1.pdf
- https://cdn.shopify.com/s/files/1/0428/0333/1231/files/42423651149.pdf
- https://cdn.shopify.com/s/files/1/0434/0449/2950/files/alexis_carrel_viaje_a_lourdes.pdf
- https://cdn.shopify.com/s/files/1/0430/4463/4773/files/najamugerejajov.pdf
- https://cdn.shopify.com/s/files/1/0459/2648/2071/files/71036732728.pdf
- https://cdn.shopify.com/s/files/1/0431/5706/1796/files/kundli_pro_software_by_durlabh_jain.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_off00007654.bin981739947cc13f1dcc6aef1703b3c698fe064749c22f4b4b0bcf788d2ab83ac9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7654 | 5724 bytes |
font_01_sfnt_off000089db.bincc44a527f856496d5316ac60ffb3aca664f34328fd3167509c214f24a63c8d19 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x89DB | 10800 bytes |
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