MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, many of which are designed to appear as academic resources. These links ultimately redirect to a known malicious domain (ttraff.cc), indicating a phishing or redirection attack. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious redirection scheme.
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.cc/pify?keyword=quimica+inorganica+pdf+exercicios
- http://files.firststagela.org/uploads/1/3/0/7/130776040/9474859.pdf
- http://files.cathyibanez.com/uploads/1/3/0/9/130969390/84c1cd.pdf
- http://files.mypurplelilyboutique.com/uploads/1/3/1/4/131408056/vokixidu-tekemajofepof.pdf
- http://files.graceevangelical.org/uploads/1/3/0/8/130814234/8316525.pdf
- https://cdn.shopify.com/s/files/1/0439/5096/4904/files/39260881827.pdf
- https://cdn.shopify.com/s/files/1/0433/8620/8406/files/60295022938.pdf
- https://cdn.shopify.com/s/files/1/0440/1345/3470/files/cognitive_behavioral_therapy_depression.pdf
- https://cdn.shopify.com/s/files/1/0427/7692/0220/files/formato_de_certificado_medico_de_buena_salud.pdf
- https://cdn.shopify.com/s/files/1/0438/2192/4514/files/mantenimiento_de_calderas_industriales.pdf
- https://cdn.shopify.com/s/files/1/0435/2642/2687/files/41384204544.pdf
- https://cdn.shopify.com/s/files/1/0432/0277/3156/files/latuluxiliwizivodosow.pdf
- https://cdn.shopify.com/s/files/1/0430/6678/5949/files/fetekarufujigajozew.pdf
- https://cdn.shopify.com/s/files/1/0430/4352/0666/files/25005675332.pdf
- https://cdn.shopify.com/s/files/1/0435/3327/1191/files/4313030561.pdf
- https://cdn.shopify.com/s/files/1/0437/7578/7169/files/simibebivukujugoposuz.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kaxoku.pdf
- https://cdn.shopify.com/s/files/1/0427/4244/8295/files/xigowariwoxabogunewun.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_off000068f1.bin675c611921fca868b9108032f36fa2a490425d8e5643c125972af17766374ecf |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x68F1 | 5572 bytes |
font_01_sfnt_off00007bd2.bin4e810b351c7d6d778cbcb4cfdc248c5fc6f75e51f1e37a2c9dc68b8e028276ab |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7BD2 | 10484 bytes |
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