MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains embedded links that redirect to malicious infrastructure, specifically identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains a URL that appears to be part of a link farm designed to manipulate search engine results. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves luring users to a malicious site via a seemingly benign document.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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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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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.cc/pify?keyword=analysis+of+algorithm+lecture+notes+pdf
- http://volivipew.dragonyouthwrestling.com/uploads/1/3/0/7/130775997/dijej.pdf
- http://files.kauffmanfraser.org/uploads/1/3/1/6/131637477/musog.pdf
- http://files.bondkitchens.co.uk/uploads/1/3/0/8/130814935/kuvokomeze_tukuxiperuxamip_zupuwodag.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0440/7921/8838/files/59386296372.pdf
- https://cdn.shopify.com/s/files/1/0432/6942/3269/files/36212575644.pdf
- https://cdn.shopify.com/s/files/1/0434/4204/5090/files/warolonikipapiwopimaro.pdf
- https://cdn.shopify.com/s/files/1/0434/6147/6504/files/farmakokinetik_amoksisilin.pdf
- https://cdn.shopify.com/s/files/1/0429/7755/8681/files/vetiwedakuxaraxolebugez.pdf
- https://cdn.shopify.com/s/files/1/0429/8843/7655/files/xudewupipetalulenupo.pdf
- https://cdn.shopify.com/s/files/1/0434/6390/1336/files/19742113985.pdf
- https://cdn.shopify.com/s/files/1/0431/5404/7137/files/koresoxabupozanajagojine.pdf
- https://cdn.shopify.com/s/files/1/0428/1673/3340/files/45539127176.pdf
- https://cdn.shopify.com/s/files/1/0434/5357/9430/files/42847260133.pdf
- https://cdn.shopify.com/s/files/1/0433/5036/0232/files/fomivinedupigituwariwop.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005d92.bin39a335ff4a43e02f15db12e2b2cbfabe544048a341fa5fd97ba23fe008d5d0e0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5D92 | 5660 bytes |
font_01_sfnt_off000070ac.binb9b57b44f52fd02af13f114d0bcb1b5e7a01d825fde431d6b5531185444d8201 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x70AC | 11124 bytes |
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