MALICIOUS
150
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL and a plausible-sounding title, 'present perfect tense exercises pdf esl library', suggesting a lure. The PDF also contains a mass external PDF link farm, with the first URL pointing to a Shopify domain, likely for SEO manipulation to increase visibility. The ML classifier strongly flagged this PDF as malicious.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 3
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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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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=present+perfect+tense+exercises+pdf+esl+library
- http://pibupu.folrac.com/uploads/1/3/0/8/130873995/bf7445af18.pdf
- http://files.itsbammtastic.com/uploads/1/3/0/9/130969600/1902236.pdf
- http://files.calpars.com/uploads/1/3/0/7/130739758/lasatopaluwexageme.pdf
- https://cdn.shopify.com/s/files/1/0435/9444/9055/files/air_pollution_management_book.pdf
- https://cdn.shopify.com/s/files/1/0428/0477/3031/files/roxusoraniwurajegiwuzurog.pdf
- https://cdn.shopify.com/s/files/1/0428/3308/4575/files/3525759614.pdf
- https://cdn.shopify.com/s/files/1/0440/3757/0710/files/pebopobukogedevuf.pdf
- https://cdn.shopify.com/s/files/1/0436/1152/1181/files/12500326117.pdf
- https://cdn.shopify.com/s/files/1/0431/2891/4087/files/xetezadujobuxopapuwuso.pdf
- https://cdn.shopify.com/s/files/1/0437/3217/2965/files/jimoxoku.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/35209966956.pdf
- https://cdn.shopify.com/s/files/1/0429/6625/3724/files/pateteredegajoluvijo.pdf
- https://cdn.shopify.com/s/files/1/0435/5863/3631/files/nikajiluxuwiditanega.pdf
- https://cdn.shopify.com/s/files/1/0432/0329/7438/files/fadebavezulebezogosivel.pdf
- https://cdn.shopify.com/s/files/1/0430/1121/1425/files/77310963860.pdf
- https://cdn.shopify.com/s/files/1/0427/6633/6167/files/vugadozomowexefasusotol.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/
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00004369.bindd14dcb394482695c621779f9c3a60ead580fe5f7c8e78102a75fe179e6b4192 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4369 | 5460 bytes |
font_01_sfnt_off0000560d.bin6e1f7dcb62e78b1d8d8ae382a579cda2820a79778ac658bfcae42eac140ed5b4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x560D | 8360 bytes |
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