MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file contains numerous links designed to appear as legitimate resources, but they ultimately redirect to a malicious link farm. The primary redirector URL is identified as malicious, and the document body, though heavily obfuscated, suggests a lure related to 'trigonometric functions all formulas pdf'. The ML classifier strongly indicates maliciousness, and the presence of embedded links points towards a phishing or redirection attack.
Machine Learning
- Nyx PDF Classifier malicious score 0.9999
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.cc/pify?keyword=trigonometric+functions+all+formulas+pdf In PDF document text
- http://files.sigma.graphics/uploads/1/3/0/8/130874615/777792.pdfIn PDF document text
- http://files.ascotdance.co.uk/uploads/1/3/1/8/131871864/ravojomewiwojun.pdfIn PDF document text
- http://files.carmenliuart.com/uploads/1/3/2/7/132710676/seveba-laloruwofujon-botimixuvane.pdfIn PDF document text
- http://files.modelbouwleuven.com/uploads/1/3/2/8/132814977/617caf595de01b.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/1/0439/0669/5320/files/kolijenixoniwefepefex.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6309/1112/files/lediripibimifaxamalal.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4211/1650/files/27356559535.pdfIn PDF document text
- https://pewinutol.files.wordpress.com/2020/07/fawefuti.pdfIn PDF document text
- https://pomurulive.files.wordpress.com/2020/06/51040677797.pdfIn PDF document text
- https://kuvonalu.files.wordpress.com/2020/06/xusozazuwawupuwilez.pdfIn PDF document text
- https://nonepagok.files.wordpress.com/2020/06/51281780386.pdfIn PDF document text
- https://tusemopupoj.files.wordpress.com/2020/07/16601954409.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/9091/2159/files/67635450085.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9948/0473/files/kirupotanojokobamunaweno.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6596/6754/files/luvobafodalotaso.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5107/4214/files/64837394315.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5188/4445/files/69497716281.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3598/4029/files/88131128974.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9977/5381/files/10279067964.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_off0001bf3f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1BF3F | 5304 bytes |
SHA-256: a53e369fa1a86a96513996ca565b1a2765a7cfcf10219473f0c1919af1b3fca7 |
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font_01_sfnt_off0001d12c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1D12C | 17560 bytes |
SHA-256: a13da6ce0259b4b9a5b8ab270f2b62a20c54b46527a1e03d8f153c281c1e375c |
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font_02_sfnt_off000208ae.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x208AE | 17000 bytes |
SHA-256: 94489626866ba431cd52ac1e49e06f29752d44e30e5256c4ed837f0d25dbf45f |
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