MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded links, with one identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that the link at https://ttraff.ru/pify?keyword=letter+a+tracing+worksheets+pdf leads to known malicious infrastructure. The 'PDF_SEO_LINK_FARM' heuristic further suggests a large number of external PDF links, many of which are likely intended to lead users to malicious sites. The ML classifier also strongly flagged this PDF as malicious.
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=letter+a+tracing+worksheets+pdf
- http://files.peacepresbyterian.org/uploads/1/3/0/7/130775143/6d926cda8.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0429/6504/1311/files/livre_apprendre_le_piano.pdf
- https://cdn.shopify.com/s/files/1/0431/2930/7293/files/37205068838.pdf
- https://cdn.shopify.com/s/files/1/0428/4776/4636/files/3383612025.pdf
- https://cdn.shopify.com/s/files/1/0435/5964/9429/files/free_printable_reading_comprehension_worksheets_8th_grade.pdf
- https://cdn.shopify.com/s/files/1/0435/1596/9688/files/android_17_x_saiyan_reader.pdf
- https://cdn.shopify.com/s/files/1/0431/4005/5208/files/english_speaking_full_course_download.pdf
- https://cdn.shopify.com/s/files/1/0431/5339/1780/files/91508912474.pdf
- https://cdn.shopify.com/s/files/1/0432/4206/1986/files/30573222188.pdf
- https://cdn.shopify.com/s/files/1/0434/2510/4028/files/71325034572.pdf
- https://cdn.shopify.com/s/files/1/0430/9532/6887/files/81880313415.pdf
- https://cdn.shopify.com/s/files/1/0428/4976/3494/files/tenevimowote.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_off00007496.bin0a7bf571822157c20c633b070f21056cb6499931ca7d56f9fae26de09be12b82 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7496 | 5480 bytes |
font_01_sfnt_off0000874f.bin6eedd4a174f250c4962b135f280126fe25efced974c8acc604888f0ae7c01615 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x874F | 10664 bytes |
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