MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF document contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though partially corrupted, includes the same malicious URL and a benign-looking title related to Brazilian tax tables, suggesting a lure. The presence of numerous other links, many hosted on Shopify, indicates a link farm strategy, likely to obscure the malicious destination. 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.com/pify?keyword=tabela+anexo+iii+simples+nacional+2018+pdf
- http://files.goincoastaljeepclub.com/uploads/1/3/1/4/131483719/4367463.pdf
- http://files.totalresetweightloss.com/uploads/1/3/1/3/131384281/7836617.pdf
- https://cdn.shopify.com/s/files/1/0431/8255/5297/files/vmware_vcloud_director_training_videos_free.pdf
- https://cdn.shopify.com/s/files/1/0432/1165/3279/files/xanewizavinirisi.pdf
- https://cdn.shopify.com/s/files/1/0429/4252/9695/files/pitutijakekug.pdf
- https://cdn.shopify.com/s/files/1/0430/8058/1274/files/36745597189.pdf
- https://cdn.shopify.com/s/files/1/0435/3848/1320/files/butterfly_kisses_lyrics.pdf
- https://cdn.shopify.com/s/files/1/0427/6515/6508/files/53320033759.pdf
- https://cdn.shopify.com/s/files/1/0437/7182/2229/files/leboxukupafegitun.pdf
- https://cdn.shopify.com/s/files/1/0432/6942/3269/files/57332497741.pdf
- https://cdn.shopify.com/s/files/1/0438/4007/7974/files/ascii_code_definition.pdf
- https://cdn.shopify.com/s/files/1/0430/4669/9165/files/22083319651.pdf
- https://cdn.shopify.com/s/files/1/0429/5104/9370/files/39171549286.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_off00006b4d.binc0ec8eabc6f097b88044189a4694d182d35d7e7e02cc3e5f14c2baad975e3966 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6B4D | 5884 bytes |
font_01_sfnt_off00007f45.bin5bb783489780a7828d31bfa6a8fe7b86691ea8f39824c0e7515ff46e37b9eb64 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7F45 | 17376 bytes |
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