MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a link to a redirector service, which is a common tactic for delivering malicious payloads. The document body, though heavily obfuscated, contains text related to an admission exam, likely serving as a lure. The PDF also hosts a large number of external links, many pointing to Shopify, suggesting a link farm for SEO poisoning or to obscure the final destination. The primary malicious IOC is the redirector URL.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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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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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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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=examen+de+admision+ceneval+pdf In PDF document text
- http://files.marineoasis.com/uploads/1/3/0/8/130813866/vogusuromipefer-jerogi-fulusenakebi-jojixefuga.pdfIn PDF document text
- http://files.kmphotographyma.com/uploads/1/3/1/4/131407165/1126974.pdfIn PDF document text
- http://files.theimpactexplorer.com/uploads/1/3/2/3/132303278/togunukewanono.pdfIn PDF document text
- http://bejoro.thewanderingbays.com/uploads/1/3/2/6/132682883/givofufabumowukap.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7378/1416/files/rapoj.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/2197/6220/files/fadirisijurugex.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7189/6736/files/silent_letters_esl.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0449/5107/7032/files/el_alcoholismo_en_los_adolescentes.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/8890/3325/files/jodujugu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8515/1897/files/45370782234.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5627/5362/files/94234398760.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3461/5708/files/sisalememofiko.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9581/8397/files/13892978814.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/0942/6079/files/wudafetaluzoweta.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5495/6695/files/28606983057.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/0329/7438/files/59173401639.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000075fc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x75FC | 5292 bytes |
SHA-256: 7e7ef3190fb394af45f3094e4e7e723eab2ab4c70c2760b28b0076514641bc00 |
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font_01_sfnt_off000087f4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x87F4 | 1912 bytes |
SHA-256: e9f8a3ef788f0cbd16162dfcacf3538d4d9f72d83e44e67f72eb93bd53224865 |
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font_02_sfnt_off00009123.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9123 | 14744 bytes |
SHA-256: df222da38282f2b0235ef9957a3898421a9c2368685a532bb322030182db555c |
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font_03_sfnt_off0000bee3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBEE3 | 16312 bytes |
SHA-256: aad9bc0f36eadc3314e08670b59090120051e308b357201f134af3d0b781b2b0 |
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