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 point to static.usrfiles.com and cdn.shopify.com domains, but one critical link redirects to the known malicious domain ttraff.com. This suggests a link farm or SEO poisoning tactic designed to drive traffic to malicious infrastructure. The ML classifier also strongly indicated maliciousness.
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/wix?keyword=arquitectura+de+computadoras+morris+mano
- https://static.usrfiles.com/ugd/d5cf39_01966e3ede5e4168918a00c05b7093ed.pdf
- https://static.usrfiles.com/ugd/b8c837_29cc4de758b64ca9835645e27474b24e.pdf
- https://static.usrfiles.com/ugd/83b1b3_8a3143fa1b7b4831a51958e558fae7dc.pdf
- https://static.usrfiles.com/ugd/b8c837_f2e93d614ef0489c8784e8870139b88a.pdf
- https://static.usrfiles.com/ugd/a18aa6_49b5bf60a3ea4f578cf66b0b62c97409.pdf
- https://cdn.shopify.com/s/files/1/0432/9409/7576/files/21061297961.pdf
- https://cdn.shopify.com/s/files/1/0432/5238/3904/files/17381683050.pdf
- https://cdn.shopify.com/s/files/1/0439/6033/6542/files/91445199307.pdf
- https://cdn.shopify.com/s/files/1/0432/7184/8100/files/zuzenetiw.pdf
- https://cdn.shopify.com/s/files/1/0430/9241/0525/files/zuweb.pdf
- https://static.usrfiles.com/ugd/b8c837_bfa3c3610ba742a2be88244e439d246f.pdf
- https://static.usrfiles.com/ugd/c7a620_c0968f1013f64476a7d5c60fd7047cf6.pdf
- https://static.usrfiles.com/ugd/71fd01_5aee2b62fae2453eb1ffe3aff33196f0.pdf
- https://static.usrfiles.com/ugd/f4de5e_010cbe1608fe4b96a460701d9699302e.pdf
- https://static.usrfiles.com/ugd/24853a_5441c3bb4e224354b044d031274f384c.pdf
- https://static.usrfiles.com/ugd/b8c837_406e5f5349dd4ea8af05a25f436413b7.pdf
- https://static.usrfiles.com/ugd/cbe7f7_4a09b6c269474c99b180fde9f171d804.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_off000049ab.bin1a9418119be894d3db07e16cf795f848e869bb9ba869df0947161e15289edbc7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x49AB | 5304 bytes |
font_01_sfnt_off00005b8d.binf895ae65711522b2ee60324f13d9e1e5f6ebfe186156f4a4aa4103d0b5b7b322 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5B8D | 10412 bytes |
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