MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a link farm and a primary malicious redirector URL disguised as an exam answer key. The ML classifier strongly indicates maliciousness. The embedded URLs suggest a tactic of hosting numerous PDFs on benign-looking platforms to obscure the malicious redirector, which is a common technique for phishing and malware distribution.
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=mpsc+final+answer+key+rajyaseva+2019
- http://files.centrepointecincinnati.com/uploads/1/3/1/4/131406413/e08b8.pdf
- http://rixixepa.bpesfoundation.org/uploads/1/3/2/3/132302963/2243693.pdf
- http://files.graceub.com/uploads/1/3/2/6/132681404/6733747.pdf
- http://giwuvive.redclayphotography.org/uploads/1/3/1/3/131379326/dururemedoreva_tiduwun_tonefizoluki.pdf
- http://files.toromewithdino.com/uploads/1/3/2/6/132695862/letusawurigamas.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0438/5928/0022/files/thomas_calculus_2_trke_zmleri.pdf
- https://cdn.shopify.com/s/files/1/0432/0742/6216/files/69951274837.pdf
- https://cdn.shopify.com/s/files/1/0434/6370/4729/files/retowepafugukajarewofe.pdf
- https://cdn.shopify.com/s/files/1/0434/9375/2997/files/atkins_and_depaula_physical_chemistry_9th_edition.pdf
- https://cdn.shopify.com/s/files/1/0434/1052/2277/files/62087726066.pdf
- https://cdn.shopify.com/s/files/1/0434/1281/6034/files/canada_immigration_form_download.pdf
- https://cdn.shopify.com/s/files/1/0432/3672/0808/files/bupaxepikuramesabop.pdf
- https://cdn.shopify.com/s/files/1/0428/1863/3894/files/12470119395.pdf
- https://cdn.shopify.com/s/files/1/0437/1687/0298/files/formulaire_attestation_de_travail.pdf
- https://cdn.shopify.com/s/files/1/0429/8250/6647/files/91130553265.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_off00006043.bine80d87fd697e0d0b82c49205253ab1088b3c9090f86398f927e05edabcacd645 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6043 | 5892 bytes |
font_01_sfnt_off00007487.bine3e6fe90026372e9eb90644ed229273eb48a42242b946132b11342cd46640d2d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7487 | 10012 bytes |
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