MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a link that redirects to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the same URL as the malicious link, suggesting an attempt to disguise malicious activity as educational material. The PDF also contains a large number of external links, indicating a potential link farm for SEO manipulation or to distribute further malicious content.
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.ru/pify?keyword=editing+exercises+for+class+5+with+answers In PDF document text
- http://files.gtc-elite.org/uploads/1/3/2/6/132682570/netefikuvuboz_fifajog_jubakafa.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/1/0434/1111/2092/files/resinonuxubojisobaxa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5856/9128/files/12926650680.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7541/9812/files/donuwigami.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3606/5438/files/reading_worksheets_esl.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0441/3983/9640/files/zapubugolupejivezotu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/2499/0887/files/peberuli.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8630/6710/files/9768498480.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9825/1165/files/gedumu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/2269/4046/files/partitioned_matrix.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0447/1724/4570/files/owners_manual_ford_fusion.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0446/3758/5571/files/reason_for_leaving_your_last_job_answer.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tokisesuzarutaxiwiru.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9702/2879/files/sintesis_de_los_lipidos.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/2631/6455/files/vi_show_line_numbers.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006f2c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6F2C | 5524 bytes |
SHA-256: 7316396226bf7ca561c2b538841d34c7cca89197bc1b2d256ab33597531eb9e2 |
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font_01_sfnt_off0000820c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x820C | 13160 bytes |
SHA-256: 7a862813a8291912c96151799fae7ea588663d427e7b028acbd5ecfb15325f65 |
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font_02_sfnt_off0000ac01.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAC01 | 16224 bytes |
SHA-256: cebb2ee4632955a3019f478c3ddd6797fe6f3065e568267a52f4b079fd487fc2 |
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