MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains multiple embedded links, with one pointing to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the URL https://ttraff.com/pify?keyword=tca+cycle+pdf, suggesting an attempt to lure the user to malicious content.
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.com/pify?keyword=tca+cycle+pdf
- http://files.teachersfortomorrow.net/uploads/1/3/1/6/131606789/sisifoso.pdf
- http://files.nkphillipscpa.com/uploads/1/3/0/7/130776790/netizubobeg_wafusewelasido.pdf
- http://files.marine-ropes.net/uploads/1/3/1/3/131378950/tiwivile-guritaxebukizu-gefit.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0427/5693/1751/files/76834784577.pdf
- https://cdn.shopify.com/s/files/1/0437/7742/5565/files/13999075526.pdf
- https://cdn.shopify.com/s/files/1/0429/5272/0543/files/bagesifes.pdf
- https://cdn.shopify.com/s/files/1/0432/5693/8658/files/apuntate_espanol_introductorio_free.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1028728638.pdf
- https://cdn.shopify.com/s/files/1/0428/1512/7708/files/foliritob.pdf
- https://cdn.shopify.com/s/files/1/0429/2925/8649/files/microsoft_for_mac.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/talijofazejodo.pdf
- https://cdn.shopify.com/s/files/1/0435/9412/1379/files/livimuzedanokabufilorid.pdf
- https://cdn.shopify.com/s/files/1/0429/1103/9655/files/34832249162.pdf
- https://cdn.shopify.com/s/files/1/0434/0360/8216/files/83697539635.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_off000063fd.bina4a729c408599c7f5cd44c4b7c44daed456ea97cbdec9626a2979fde27ae953d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x63FD | 4924 bytes |
font_01_sfnt_off000074e4.bin2bbc3ed71054a61d861e12d06be4b7510c5d787269e1493a61809e4627fc181f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x74E4 | 9628 bytes |
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