MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com and a redirector on ttraff.ru. The ML classifier strongly indicated maliciousness. The document body, though heavily obfuscated, appears to be a lure related to admission guides, intended to trick users into clicking the malicious links.
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=amu+nri+admission+guide In PDF document text
- http://files.promisewed.com/uploads/1/3/1/4/131437276/jegur-wajokumitomu-xovegiposisafi-rebekuk.pdfIn PDF document text
- http://files.finleydesignart.com/uploads/1/3/0/9/130969981/1880772.pdfIn PDF document text
- http://files.nobleprincess.com/uploads/1/3/2/6/132695294/1343ce2ec.pdfIn PDF document text
- http://files.multiculturalvirtualexperience.com/uploads/1/3/2/6/132695782/duzuwabosi.pdfIn PDF document text
- http://files.patokavalleycte.com/uploads/1/3/0/8/130873758/pawofutubotajeb-mazonobebazuli-lilenuterevor-xugalobepuz.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/1/0432/2823/3887/files/bibemiroviwivurojowewoveb.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5207/2086/files/41033779685.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3519/7602/files/79499134709.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3320/6682/files/zavozowiniw.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/8512/8090/files/vugunofikinaxixafosesodo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/9002/5375/files/88171817217.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/8393/2582/files/xokalukamum.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/baxijis.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1243/1776/files/55941846591.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7365/9290/files/75718692331.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6536/0034/files/kafukoxawotilikivu.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_off0000c927.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC927 | 4904 bytes |
SHA-256: 15878ee2bc41bd56ce2fcc91836b766dfb65d6c5b8d9738807a92629395443be |
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font_01_sfnt_off0000d99f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD99F | 15604 bytes |
SHA-256: d619db0d0d0f22656218a37c8c2948f10a9764ef3531b808c98a73ddbd989b0c |
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font_02_sfnt_off00010a59.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10A59 | 16164 bytes |
SHA-256: e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6 |
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