MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a mass external link farm, with a prominent link disguised as an 'English placement test b2 pdf'. This link, and others, point to a redirector service (ttraff.link) known to host malicious content. The ML classifier strongly indicated maliciousness, and the PDF structure itself is indicative of a link-farming technique to distribute malware or phishing lures.
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.link/pify?keyword=english+placement+test+b2+pdf
- http://files.elfiesrefuge.net/uploads/1/3/2/7/132712209/ded969697a1282b.pdf
- http://files.sarasotaauction.com/uploads/1/3/2/8/132814972/3260740.pdf
- https://cdn.shopify.com/s/files/1/0430/8795/4073/files/buman.pdf
- https://cdn.shopify.com/s/files/1/0434/0695/0550/files/simple_algorithm_examples.pdf
- https://cdn.shopify.com/s/files/1/0431/7030/0065/files/alien_vs_predator_arcade_game_pc.pdf
- https://cdn.shopify.com/s/files/1/0436/0096/9890/files/65357023604.pdf
- https://cdn.shopify.com/s/files/1/0428/9599/9129/files/arabic_language_dictionary.pdf
- https://cdn.shopify.com/s/files/1/0440/1030/7749/files/yearly_budget_template_google.pdf
- https://cdn.shopify.com/s/files/1/0429/6821/9799/files/ladenaviboloripagedi.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75555741983.pdf
- https://cdn.shopify.com/s/files/1/0431/0764/7639/files/pensar_la_arquitectura_peter_zumthor_descargar.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00004cc1.bin63b458f46b719126801d6a9dd424606ca8e68709968b7364fd0b0a02846189b0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4CC1 | 5380 bytes |
font_01_sfnt_off00005edc.bina3f2ef655725065c9c45af52747db194e4b26d309a9572921b5ab5e70b68536e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5EDC | 10052 bytes |
font_02_sfnt_off00008127.bin1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8127 | 4324 bytes |
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