Malware Insights
The PDF document was flagged as malicious due to the presence of a redirector link pointing to `https://ttraff.com/wb?keyword=sistema%20tegumentar%20pdf%20livro`. This heuristic, combined with the ML classifier's high confidence score, indicates a likely attempt to redirect users to a malicious site. The document also contains a large number of external PDF links, many hosted on Shopify, which is characteristic of SEO poisoning or link farm tactics to obscure the final malicious destination. No scripts were extracted, but the primary attack vector appears to be social engineering via a malicious link within the PDF.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 3
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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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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/wb?keyword=sistema%20tegumentar%20pdf%20livro
- http://files.pieceworkjournals.com/uploads/1/3/1/4/131483371/bipip.pdf
- http://files.sanlandequipment.co.nz/uploads/1/3/0/7/130740493/8401041.pdf
- http://files.mayacamasfinefoods.com/uploads/1/3/0/7/130776268/pomikazidu-nabupos.pdf
- https://cdn.shopify.com/s/files/1/0438/9352/2587/files/75093353519.pdf
- https://cdn.shopify.com/s/files/1/0429/7631/3503/files/lapinaredofujivovolukara.pdf
- https://cdn.shopify.com/s/files/1/0432/2200/7969/files/xulatemodeletonoke.pdf
- https://cdn.shopify.com/s/files/1/0429/5586/6263/files/45303805572.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xumilegimazuguvabunozanik.pdf
- https://cdn.shopify.com/s/files/1/0432/1532/3291/files/54634700707.pdf
- https://cdn.shopify.com/s/files/1/0429/5681/6540/files/40727578731.pdf
- https://cdn.shopify.com/s/files/1/0434/1320/9246/files/55627681178.pdf
- https://cdn.shopify.com/s/files/1/0429/8443/9971/files/zewenakapilewex.pdf
- https://cdn.shopify.com/s/files/1/0429/9712/1178/files/zipixuj.pdf
- https://cdn.shopify.com/s/files/1/0432/4560/0936/files/16171064830.pdf
- https://cdn.shopify.com/s/files/1/0438/3955/3696/files/xafuroluwe.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_off00006194.bin37d2533d10c5604afb8f96c46c6a7462b8b8b30bd24f205f9dc56e7271a07baa |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6194 | 5404 bytes |
font_01_sfnt_off000073d9.binb5a6f3f5d63042ef10199755b3bdbdd710549970b484356c9c249dc6ea2e7b17 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x73D9 | 13176 bytes |
font_02_sfnt_off00009b03.binb50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9B03 | 4324 bytes |
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