MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a significant number of embedded links, many of which point to external resources. One critical heuristic identified a link to known malicious redirector infrastructure at https://ttraff.ru/pify. The document body, though heavily obfuscated, contains text related to 'environmental chemistry class 11 ncert notes pdf download' and the malicious URL, suggesting a lure to trick users into visiting potentially harmful sites. The ML classifier strongly indicated maliciousness.
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=environmental+chemistry+class+11+ncert+notes+pdf+download In PDF document text
- http://files.traceyknapp.com/uploads/1/3/1/6/131637374/meximu_nokibidilog_zalirezetuset_salemorazojeson.pdfIn PDF document text
- http://files.learningandbehavior.org/uploads/1/3/1/4/131409526/juvatizorajame.pdfIn PDF document text
- http://files.taotantricteachers.com/uploads/1/3/1/4/131455680/2562728.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/1/0428/5107/4214/files/mafogujebubijolenu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4885/2891/files/xakisobibululafikuxep.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/5209/5898/files/xinexibek.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5843/8039/files/nikujibimaxuvu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/2208/8354/files/22312749903.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7248/6564/files/73138055257.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/5281/6798/files/48265690726.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6552/3862/files/29694157490.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/1139/0115/files/famexeza.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/4868/8033/files/sedexepeteno.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8001/5262/files/xefataj.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49186839350.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5276/9192/files/sinemebegexivinidizigebes.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/4963/2415/files/tafoduva.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_off000073ff.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x73FF | 5660 bytes |
SHA-256: 54135b2f11f83cc90fe4208f6081d4a4a8d175c913fa901be654a6253bb2fd06 |
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font_01_sfnt_off00008735.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8735 | 10268 bytes |
SHA-256: 6b10c388ca8fcb9c7770d455b492b8ac7a10a6038ee05fb1d0001f23969b1bcc |
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font_02_sfnt_off0000aa65.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAA65 | 16096 bytes |
SHA-256: 63a83331b5e33638d2884a48cc841bf0283b21584b64ebb309d6b018ca2e567a |
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