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 external PDF files, suggesting a link farm for SEO manipulation or to obscure malicious redirects. One critical heuristic identified a direct link to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to '5th grade math mixed review worksheets pdf' and the malicious redirector URL, indicating a lure to disguise the malicious intent. The primary malicious IOC is the redirector URL.
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.link/pify?keyword=5th+grade+math+mixed+review+worksheets+pdf
- https://cdn.shopify.com/s/files/1/0432/6447/5299/files/adobe_acrobat_convert_to_word_free.pdf
- https://cdn.shopify.com/s/files/1/0430/4879/6309/files/pegitijidolagasabo.pdf
- https://cdn.shopify.com/s/files/1/0462/5789/7621/files/nafenitaxasefet.pdf
- https://cdn.shopify.com/s/files/1/0429/8552/1311/files/bevelox.pdf
- https://cdn.shopify.com/s/files/1/0437/1336/4121/files/34700880421.pdf
- https://static.usrfiles.com/ugd/3aee12_e13c6eb50abd40dd9fd53925bdc08233.pdf
- https://static.usrfiles.com/ugd/65b209_797c082e43b949ce916c092de0644596.pdf
- https://static.usrfiles.com/ugd/1e8759_03debc50084345cfaae89cb878667844.pdf
- https://static.usrfiles.com/ugd/c70c35_0ca940c76c584c53b86484a5b74b23bf.pdf
- https://static.usrfiles.com/ugd/3794ad_8e95c37a514f40ae9efdba2f17b7b3eb.pdf
- https://static.usrfiles.com/ugd/ace02d_12e7045789954bbe839a9afc576977bb.pdf
- https://static.usrfiles.com/ugd/b4609a_2a6c0772573148369f2d6aa4b3576ae8.pdf
- https://static.usrfiles.com/ugd/a2d007_3801b869921742919a47a3839d50f99e.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_off00006d57.bin6cbb0b9a7095e6fbbd66c787bf48bd4a4a619d3d48ca7effb109c306696d80ff |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6D57 | 5736 bytes |
font_01_sfnt_off000080cc.binb0d6b1ad54e0ffd4a117f30d4bd45cce1419957fdeef0926572cfd8e538cf2cf |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x80CC | 9948 bytes |
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