MALICIOUS
242
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF contains a link disguised as an exam preparation document, which is a social engineering lure to trick users into clicking malicious URLs. The heuristic 'SE_BROWSER_INSTALL_LURE' indicates the document prompts the user to install a browser extension or update, a common method for credential theft or malware installation. The link 'https://ttraff.ru/pify?keyword=examen+ceneval+prepa+pdf' is flagged as a malicious redirector, further supporting the malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 7
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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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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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=examen+ceneval+prepa+pdf In PDF document text
- http://jufotof.cruzing4photos.com/uploads/1/3/1/4/131483281/650556a8f.pdfIn PDF document text
- http://files.ashleyparsonsyoga.com/uploads/1/3/2/7/132740415/newixebomufobezofawe.pdfIn PDF document text
- http://files.vivotrainingsystems.com/uploads/1/3/1/3/131383943/ruwuvi_lagozizog_jusibusojutape_fajereguga.pdfIn PDF document text
- http://files.oxnard-photography.com/uploads/1/3/1/4/131409037/furefilek.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/1/0431/2553/8980/files/dorapamofi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0006/9287/files/jivuriwa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8343/2096/files/cardiothoracic_surgery_books.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/47171602999.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9238/5700/files/4640349210.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7272/4897/files/fadivadibibu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4923/8178/files/rakusifiralenixufil.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/2525/3023/files/zebuzexarefeg.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3429/5966/files/12586543374.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/5736/2597/files/31190362492.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3413/2131/files/daxamewop.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9878/3382/files/illinois_llc_annual_fees.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
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000cd68.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCD68 | 5208 bytes |
SHA-256: 838b8779be8b399588f95a34e5dadd7c413bcfb24a538487030881ed3c34f7ae |
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font_01_sfnt_off0000df17.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF17 | 10964 bytes |
SHA-256: 9f8f7ac0b562d068fa0503a17bc96e67dbe1110ce81b3da25d3760fd03d027a3 |
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