MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a mass of external links, many of which point to a link farm hosted on static.usrfiles.com, and one critical link to a known malicious redirector at ttraff.me. The document body, though heavily obfuscated, contains the target URL, suggesting a lure to a malicious site. The ML classifier strongly supports the malicious verdict.
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.me/wix?keyword=jorge+basadre+grohmann+pdf
- https://cdn.shopify.com/s/files/1/0427/6345/2583/files/91633161430.pdf
- https://cdn.shopify.com/s/files/1/0433/6851/3686/files/texojekotiwaxiwijidup.pdf
- https://cdn.shopify.com/s/files/1/0431/7678/8134/files/crowbar_risk_of_rain_2.pdf
- https://cdn.shopify.com/s/files/1/0440/7122/3446/files/advantages_and_disadvantages_of_globalization_essay.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sezam.pdf
- https://static.usrfiles.com/ugd/ec0012_8fda9ea84bf040c5859d4823874a6ed2.pdf
- https://static.usrfiles.com/ugd/9421c8_3b1075ef6b63435f9b7cf4a4a57973dc.pdf
- https://static.usrfiles.com/ugd/b8c837_1c31454b5c9f4623b96c73110c8518bf.pdf
- https://static.usrfiles.com/ugd/b8c837_0cbffd95719a48abb4eb29ecff715736.pdf
- https://static.usrfiles.com/ugd/b8c837_63f930eeefe54607b2a09fbba739838f.pdf
- https://static.usrfiles.com/ugd/a3b54b_9699044e65e940ddb49b84d62434b84b.pdf
- https://static.usrfiles.com/ugd/b8c837_a8f2906ae8a04caa8d393c15974df4cc.pdf
- https://static.usrfiles.com/ugd/55f640_3e72ea10646c4238a8aa793f141d93b6.pdf
- https://static.usrfiles.com/ugd/b8c837_927c2bf494ff478d8ebdfe818e39c2e7.pdf
- https://cdn.shopify.com/s/files/1/0463/7858/2171/files/asco_guidelines_breast_cancer_2018.pdf
- https://cdn.shopify.com/s/files/1/0431/3881/0010/files/86898217652.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_off000072a2.bin1c7a30b5d5c32fb72fbea37e4142c154f3f333552e78e5da8d0918132c67064e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x72A2 | 5552 bytes |
font_01_sfnt_off0000854e.bin6345f20388412721b6a3c0c6cd092aaba370eaa87e493c831f2e3f5e9a53c1cc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x854E | 9876 bytes |
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