MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a large number of embedded links, many of which point to a redirector service known for malicious activity. The document body and embedded links suggest a lure related to educational materials, likely to trick users into clicking through to malicious sites. The ML classifier strongly indicated maliciousness, and the PDF structure itself is indicative of a link farm used for SEO poisoning or traffic redirection.
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/wix?keyword=big+ideas+math+advanced+1+answer+key
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/b8c837_e1e15348104e4cf1a43f89dd17fac07f.pdf
- https://static.usrfiles.com/ugd/23e9be_3cabb965a9ba451c83d01b18910f5391.pdf
- https://static.usrfiles.com/ugd/0d9a50_2816cedfb31b48a69b42affdc5c10e3a.pdf
- https://static.usrfiles.com/ugd/3ceeb9_3e2591b015674e468b177265fe3f8c8f.pdf
- https://static.usrfiles.com/ugd/18122d_b6647c2d654947e5a1d662ca1816236e.pdf
- https://cdn.shopify.com/s/files/1/0437/9652/9313/files/prevalensi_penyakit_jantung_koroner_menurut_who_2020.pdf
- https://cdn.shopify.com/s/files/1/0431/0673/0144/files/74197901298.pdf
- https://cdn.shopify.com/s/files/1/0434/6901/3157/files/pederiberejodobol.pdf
- https://cdn.shopify.com/s/files/1/0432/5172/8546/files/54143067079.pdf
- https://cdn.shopify.com/s/files/1/0437/4495/2471/files/side_eye_text_emoji.pdf
- https://cdn.shopify.com/s/files/1/0433/6028/8927/files/participial_adjective_exercise.pdf
- https://cdn.shopify.com/s/files/1/0429/1778/9862/files/74402842568.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/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00004bd3.bin1e7b64b78b663e897c966e67554b360c2659853a7f2e5ac9a438fbd238007c5f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4BD3 | 5740 bytes |
font_01_sfnt_off00005f58.bin1855006cf75401e35c52a3865c1c2628fad30e8e1c414d4bc1ddee6e1b53995d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5F58 | 14276 bytes |
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