MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a large number of embedded links, with the primary link directing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'heterogeneous and homogeneous mixtures worksheet answers' and includes the malicious URL, suggesting a lure for educational content that leads to malicious infrastructure. 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=heterogeneous+and+homogeneous+mixtures+worksheet+answers
- http://sirur.jkashort.com/uploads/1/3/0/8/130874493/dotusobusufezev.pdf
- https://cdn.shopify.com/s/files/1/0431/2717/7380/files/41746753529.pdf
- https://cdn.shopify.com/s/files/1/0429/6219/0499/files/64701413331.pdf
- https://cdn.shopify.com/s/files/1/0437/1329/8581/files/tudakewadujimotevetumet.pdf
- https://cdn.shopify.com/s/files/1/0439/3231/9912/files/72492171791.pdf
- https://cdn.shopify.com/s/files/1/0432/5759/4011/files/auto_repair_invoice_form.pdf
- https://cdn.shopify.com/s/files/1/0433/9662/8641/files/buku_bani_abbasiyah.pdf
- https://cdn.shopify.com/s/files/1/0427/6187/9719/files/luwipofobarok.pdf
- https://cdn.shopify.com/s/files/1/0429/7441/2949/files/belajar_pivot_excel_2020.pdf
- https://cdn.shopify.com/s/files/1/0435/3599/0936/files/mibutigawotugo.pdf
- https://cdn.shopify.com/s/files/1/0433/1021/9422/files/88237841303.pdf
- https://cdn.shopify.com/s/files/1/0437/8345/4872/files/55049908146.pdf
- https://cdn.shopify.com/s/files/1/0429/1287/4662/files/bomugagadalo.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_off00005fa0.bin5f45498fc4a6645e6cd9abe3f2d8047964e3279f0bf66c3f6d3ba5525248459c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5FA0 | 5392 bytes |
font_01_sfnt_off000071e1.bin5cd494e7ce6389c0e6e7bffb027d37598b415c10dec3420cb81f1c7fe7ac80a2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x71E1 | 10316 bytes |
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