MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a large number of embedded links, many of which point to external resources, suggesting a link farm or redirection strategy. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though partially corrupted, contains text related to an 'English grammar worksheet for class 1' and includes the suspicious URL, indicating a social engineering lure. The ML classifier strongly flagged this PDF as malicious.
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/pify?keyword=english+grammar+worksheet+for+class+1
- http://files.phyllisparun.com/uploads/1/3/0/7/130740189/984060.pdf
- http://files.stgilesdesborough.org/uploads/1/3/1/8/131856353/netanifiwuved.pdf
- https://cdn.shopify.com/s/files/1/0438/4171/6389/files/codex_calixtinus_completo.pdf
- https://cdn.shopify.com/s/files/1/0432/2567/7982/files/lotuxiluluni.pdf
- https://cdn.shopify.com/s/files/1/0431/1734/6965/files/23321933849.pdf
- https://cdn.shopify.com/s/files/1/0428/3029/9292/files/internet_of_things_journal.pdf
- https://cdn.shopify.com/s/files/1/0436/0696/6429/files/65844074207.pdf
- https://cdn.shopify.com/s/files/1/0440/7492/6230/files/lenutatabuxuka.pdf
- https://cdn.shopify.com/s/files/1/0429/8244/1113/files/kozatixes.pdf
- https://cdn.shopify.com/s/files/1/0430/1812/5465/files/bevorafetozigudis.pdf
- https://cdn.shopify.com/s/files/1/0432/6876/7907/files/possessive_adjective_and_possessive_pronoun_exercise_pdf.pdf
- https://cdn.shopify.com/s/files/1/0430/4620/7637/files/fikurum.pdf
- https://cdn.shopify.com/s/files/1/0428/8079/4790/files/61977483605.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_off000058af.bin9b600dced2b73e1523fbf78a09d81f785a7092b05d697c7effa9875e1426ebcb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x58AF | 5460 bytes |
font_01_sfnt_off00006b33.bind94ede839b0526548afbe6529d0381a0899eb9e817762e4d09aa4d410890bf0f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6B33 | 9980 bytes |
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