MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Phishing: Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, many pointing to external PDF files, which is indicative of a link farm or SEO spam. One critical heuristic identified a link to a known malicious redirector, 'ttraff.cc', which is used to obscure the final destination. The document body, though malformed, contains text related to 'properties of addition worksheets grade 1 pdf', suggesting a lure to attract users searching for educational materials. 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.cc/pify?keyword=properties+of+addition+worksheets+grade+1+pdf
- http://files.writingdayworkshops.com/uploads/1/3/1/4/131407183/3649152.pdf
- http://sarofit.readyhempgo.com/uploads/1/3/0/8/130874317/7755999.pdf
- http://files.novelsf.com/uploads/1/3/1/4/131483550/mataxopawowojuvuba.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/33374625424.pdf
- https://cdn.shopify.com/s/files/1/0434/0544/3237/files/76203231104.pdf
- https://cdn.shopify.com/s/files/1/0432/6454/0825/files/73050125907.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41326774972.pdf
- https://cdn.shopify.com/s/files/1/0432/5959/2864/files/john_deere_l120_service_manual.pdf
- https://cdn.shopify.com/s/files/1/0435/9133/6099/files/biology_miller_and_levine_teacher_edition.pdf
- https://cdn.shopify.com/s/files/1/0445/3256/4132/files/digestive_system_test_ks3.pdf
- https://cdn.shopify.com/s/files/1/0434/1461/8262/files/jikafipisajerurukazej.pdf
- https://cdn.shopify.com/s/files/1/0432/7541/9798/files/devuzobe.pdf
- https://cdn.shopify.com/s/files/1/0431/6112/5025/files/23200522913.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_off000098f7.bin06c9b3b4763e669bc250db85f40d8d652dcf88831679e3335ce50dc0c6f6ca1d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x98F7 | 5480 bytes |
font_01_sfnt_off0000abb3.binc18325b148c4eee80d6fba1438c502c112cd1c62989fe73ad82002bc5c238976 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xABB3 | 10536 bytes |
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