MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=texto+argumentativo+ejercicios+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, including one to 'https://cdn.shopify.com/s/files/1/0431/0371/5481/files/dusefosutewe.pdf'. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the malicious URL, reinforcing the attack pattern.
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.ru/pify?keyword=texto+argumentativo+ejercicios+pdf
- http://files.hr-conference.org/uploads/1/3/1/3/131380889/dudaze_fodifef_xakomivuz.pdf
- http://files.oleksyphotos.com/uploads/1/3/1/4/131482975/5150473.pdf
- http://files.theartswithpassion.com/uploads/1/3/0/9/130969153/niropokoj.pdf
- https://cdn.shopify.com/s/files/1/0431/0371/5481/files/dusefosutewe.pdf
- https://cdn.shopify.com/s/files/1/0431/3088/0162/files/dupoj.pdf
- https://cdn.shopify.com/s/files/1/0430/8713/4882/files/arabic_language_download.pdf
- https://cdn.shopify.com/s/files/1/0428/5526/8519/files/gizexagewelasubigomab.pdf
- https://cdn.shopify.com/s/files/1/0431/7727/9652/files/asapscience_the_new_periodic_table_song.pdf
- https://cdn.shopify.com/s/files/1/0427/8072/1311/files/psp_racing_games.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/95509007145.pdf
- https://cdn.shopify.com/s/files/1/0430/8451/3429/files/99718776626.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75130531250.pdf
- https://cdn.shopify.com/s/files/1/0430/9454/0452/files/xekopuxitatekop.pdf
- https://cdn.shopify.com/s/files/1/0431/6951/3632/files/12159745890.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_off0000a0aa.bin0940b5ee3a8f2bb48cf56616360cb8e559ff66e0f4015f27f79bb0e69435dc36 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA0AA | 5596 bytes |
font_01_sfnt_off0000b3b4.bin56545623f6c1ec07ac24b58f6c054e7d6f517bee4d9fa86d228e5ad279e93b6e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB3B4 | 11580 bytes |
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