MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a link to a known malicious redirector, ttraff.ru, which is designed to lure users to a malicious site. The document body, though heavily obfuscated, contains the same URL and appears to be a lure for learning German. The PDF also contains a large number of links to other PDFs hosted on Shopify, likely for SEO manipulation to increase visibility. The ML classifier 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.ru/pify?keyword=libro+aprender+aleman+en+7+dias+pdf
- http://kavigak.mivestido.net/uploads/1/3/1/3/131381078/jimanod.pdf
- http://files.stackhousepark.com/uploads/1/3/0/7/130776409/2668435.pdf
- http://files.williamreimann.com/uploads/1/3/1/4/131453054/sebagazejeto.pdf
- http://files.leonardpaul.com/uploads/1/3/1/4/131406659/zufibalufuvo-wuzime-lunegitudinije-vokisevoduxaro.pdf
- https://cdn.shopify.com/s/files/1/0447/8484/4949/files/mystring_class_c.pdf
- https://cdn.shopify.com/s/files/1/0429/4865/7311/files/97283814586.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/riwemabosemuridaredexe.pdf
- https://cdn.shopify.com/s/files/1/0432/0913/0143/files/athens_airport_terminal_map.pdf
- https://cdn.shopify.com/s/files/1/0436/2846/2240/files/medum.pdf
- https://cdn.shopify.com/s/files/1/0439/6626/7550/files/electrical_aptitude_test.pdf
- https://cdn.shopify.com/s/files/1/0430/3169/1421/files/toledo_police_accident_reports.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90840236881.pdf
- https://cdn.shopify.com/s/files/1/0432/8669/1998/files/bedutonexebod.pdf
- https://cdn.shopify.com/s/files/1/0434/5344/8358/files/32663688753.pdf
- https://cdn.shopify.com/s/files/1/0434/4784/5030/files/persuasive_writing_rubric.pdf
- https://cdn.shopify.com/s/files/1/0435/4883/6004/files/94020328862.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_off000070ad.bin9b9e19f9122e246e3c275af7ae74cd98a70a51cf1b465016156929b184ef674c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x70AD | 5348 bytes |
font_01_sfnt_off000082ca.bine18af7735bd0fc4603f991ca46fe58fe8e7583040f13d3d6edbd1f10cf16415e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x82CA | 11372 bytes |
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